Number

1,418

1,418 is a composite number, even, a calendar year.

1,418 (one thousand four hundred eighteen) is an even 4-digit number. It is a composite number with 4 divisors, and factors as 2 × 709. Written other ways, in Roman numerals it is MCDXVIII and in binary, 10110001010.

Cube-Free Deficient Number Happy Number Odious Number Pernicious Number Recamán's Sequence Semiprime Squarefree Year

Interestingness

★ ★ ★ ☆ ☆

5 notable facts · grade C

1,406 1,407 1,408 1,409 1,410 1,411 1,412 1,413 1,414 1,415 1,416 1,417 1,418 1,419 1,420 1,421 1,422 1,423 1,424 1,425 1,426 1,427 1,428 1,429 1,430

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Historical context — 1418 AD

Calendar year

Year 1418 (MCDXVIII) was a common year starting on Saturday of the Julian calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →

Year facts

Year type: Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
Days in year: 365
ISO weeks: 53
Long year: contains 53 ISO weeks.
Started on: Thursday
January 1, 1418
Ended on: Thursday
December 31, 1418
Friday the 13ths: 3
3 Friday the 13ths this year.
Decade: 1410s
1410–1419
Century: 15th century
1401–1500
Millennium: 2nd millennium
1001–2000
Years ago: 608
608 years before 2026.

In other calendars

Hebrew: 5178 / 5179 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 820 / 821 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Earth zodiac:Dog
Sexagenary cycle position 35 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1961 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 796 / 797 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1410 / 1411 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1340 / 1339 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 4
Digit sum: 14
Digit product: 32
Digital root: 5
Palindrome: No
Bit width: 11 bits
Reversed: 8,141
Recamán's sequence: a(520) = 1,418
Square (n²): 2,010,724
Cube (n³): 2,851,206,632
Divisor count: 4
σ(n) — sum of divisors: 2,130
φ(n) — Euler's totient: 708
Sum of prime factors: 711

Primality

Prime factorization: 2 × 709

Nearest primes: 1,409 (−9) · 1,423 (+5)

Divisors & multiples

All divisors (4)

1 · 2 · 709 (half) · 1418

Aliquot sum (sum of proper divisors): 712

Factor pairs (a × b = 1,418)

1 × 1418

2 × 709

First multiples

1,418 · 2,836 (double) · 4,254 · 5,672 · 7,090 · 8,508 · 9,926 · 11,344 · 12,762 · 14,180

Sums & aliquot sequence

As a sum of two squares: 7² + 37²

As consecutive integers: 353 + 354 + 355 + 356

Aliquot sequence: 1,418 → 712 → 638 → 442 → 314 → 160 → 218 → 112 → 136 → 134 → 70 → 74 → 40 → 50 → 43 → 1 → 0 — terminates at zero

Continued fraction of √n

√1,418 = [37; (1, 1, 1, 10, 10, 1, 1, 1, 74)]

Period length 9 — the block in parentheses repeats forever.

Representations

In words: one thousand four hundred eighteen
Ordinal: 1418th
Roman numeral: MCDXVIII
Binary: 10110001010
Octal: 2612
Hexadecimal: 0x58A
Base64: BYo=
One's complement: 64,117 (16-bit)
Scientific notation: 1.418 × 10³
As a duration: 1,418 s = 23 minutes, 38 seconds

In other bases

ternary (3) 1221112

quaternary (4) 112022

quinary (5) 21133

senary (6) 10322

septenary (7) 4064

nonary (9) 1845

undecimal (11) 107a

duodecimal (12) 9a2

tridecimal (13) 851

tetradecimal (14) 734

pentadecimal (15) 648

As an angle

1,418° = 3 × 360° + 338°

338° ≈ 5.899 rad

Compass bearing: NNW (north-northwest)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓆼𓍢𓍢𓍢𓍢𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵αυιηʹ
Mayan (base 20): 𝋣·𝋪·𝋲
Chinese: 一千四百一十八
Chinese (financial): 壹仟肆佰壹拾捌

In other modern scripts

Eastern Arabic ١٤١٨ Devanagari १४१८ Bengali ১৪১৮ Tamil ௧௪௧௮ Thai ๑๔๑๘ Tibetan ༡༤༡༨ Khmer ១៤១៨ Lao ໑໔໑໘ Burmese ၁၄၁၈

Digit at this position in famous constants

π — Pi (π): Digit 1,418 = 3
e — Euler's number (e): Digit 1,418 = 7
φ — Golden ratio (φ): Digit 1,418 = 2
√2 — Pythagoras's (√2): Digit 1,418 = 6
ln 2 — Natural log of 2: Digit 1,418 = 4
γ — Euler-Mascheroni (γ): Digit 1,418 = 3

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1418, here are decompositions:

19 + 1399 = 1418
37 + 1381 = 1418
97 + 1321 = 1418
127 + 1291 = 1418
139 + 1279 = 1418
181 + 1237 = 1418
331 + 1087 = 1418
349 + 1069 = 1418

Showing the first eight; more decompositions exist.

Unicode codepoint

Armenian Hyphen

U+058A

Dash punctuation (Pd)

UTF-8 encoding: D6 8A (2 bytes).

Lookup U+058A on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00058A

RGB(0, 5, 138)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.138.

Address: 0.0.5.138
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.5.138

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Musical pitch

Heard as a frequency, 1,418 Hz is closest to:

Concert pitch (A4 = 440 Hz): F6 (1396.9 Hz, +26¢)
Scientific pitch (C4 = 256 Hz): F♯6 (1448.2 Hz, -36¢)
Baroque pitch (A4 = 415 Hz): F♯6 (1395.9 Hz, +27¢)

Position in π

The digit sequence 1418 first appears in π at position 24,228 of the decimal expansion (the 24,228ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.

Look up 1418 on Pi Search ↗