Number

1,549

1,549 is a prime, odd, a calendar year.

Arithmetic Number Cousin Prime Deficient Number Odious Number Pernicious Number Prime Pythagorean Prime Recamán's Sequence Sexy Prime Squarefree Year

Notable events — 1549 AD

Jan 21 The Act of Uniformity introduces the first Book of Common Prayer in England.
Aug 15 Francis Xavier arrives in Japan to launch Catholic missions there.
Jul 6 Kett's Rebellion erupts in Norfolk.

Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0

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: 52
Started on: Saturday
January 1, 1549
Ended on: Saturday
December 31, 1549
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 1540s
1540–1549
Century: 16th century
1501–1600
Millennium: 2nd millennium
1001–2000
Years ago: 477
477 years before 2026.

In other calendars

Hebrew: 5309 / 5310 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 955 / 956 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Earth zodiac:Rooster
Sexagenary cycle position 46 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 2092 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 927 / 928 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1541 / 1542 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1471 / 1470 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 4
Digit sum: 19
Digit product: 180
Digital root: 1
Palindrome: No
Bit width: 11 bits
Reversed: 9,451
Recamán's sequence: a(1,462) = 1,549
Square (n²): 2,399,401
Cube (n³): 3,716,672,149
Divisor count: 2
σ(n) — sum of divisors: 1,550
φ(n) — Euler's totient: 1,548

Primality

1,549 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 1549

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 1,549)

1 × 1549

First multiples

1,549 · 3,098 (double) · 4,647 · 6,196 · 7,745 · 9,294 · 10,843 · 12,392 · 13,941 · 15,490

Sums & aliquot sequence

As a sum of two squares: 18² + 35²

As consecutive integers: 774 + 775

Representations

In words: one thousand five hundred forty-nine
Ordinal: 1549th
Roman numeral: MDXLIX
Binary: 11000001101
Octal: 3015
Hexadecimal: 0x60D
Base64: Bg0=
One's complement: 63,986 (16-bit)

In other bases

ternary (3) 2010101

quaternary (4) 120031

quinary (5) 22144

senary (6) 11101

septenary (7) 4342

nonary (9) 2111

undecimal (11) 1189

duodecimal (12) a91

tridecimal (13) 922

tetradecimal (14) 7c9

pentadecimal (15) 6d4

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵αφμθʹ
Mayan (base 20): 𝋣·𝋱·𝋩
Chinese: 一千五百四十九
Chinese (financial): 壹仟伍佰肆拾玖

In other modern scripts

Eastern Arabic ١٥٤٩ Devanagari १५४९ Bengali ১৫৪৯ Tamil ௧௫௪௯ Thai ๑๕๔๙ Tibetan ༡༥༤༩ Khmer ១៥៤៩ Lao ໑໕໔໙ Burmese ၁၅၄၉

Digit at this position in famous constants

π — Pi (π): Digit 1,549 = 3
e — Euler's number (e): Digit 1,549 = 8
φ — Golden ratio (φ): Digit 1,549 = 5
√2 — Pythagoras's (√2): Digit 1,549 = 9
ln 2 — Natural log of 2: Digit 1,549 = 7
γ — Euler-Mascheroni (γ): Digit 1,549 = 6

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 1,543 (gap of 6)
Next prime: 1,553 (gap of 4)

Pair status: cousin with 1553, sexy with 1543.

Unicode codepoint

Arabic Date Separator

U+060D

Other punctuation (Po)

UTF-8 encoding: D8 8D (2 bytes).

Lookup U+060D on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00060D

RGB(0, 6, 13)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.13.

Address: 0.0.6.13
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.6.13

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

Position in π

The digit sequence 1549 first appears in π at position 26,816 of the decimal expansion (the 26,816ordinal-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 1549 on Pi Search ↗