1,518
1,518 is a composite number, even, a calendar year.
Notable events — 1518 AD
- Jun 30 Pope Leo X bulls allow indulgences for German crusade, fueling further Luther dispute.
- Jul 13 The first major dance plague erupts in Strasbourg.
- Oct 12 Luther refuses to recant at Augsburg.
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
-
Tuesday
January 1, 1518
- Ended on
-
Tuesday
December 31, 1518
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
1510s
1510–1519
- Century
-
16th century
1501–1600
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
508
508 years before 2026.
In other calendars
- Hebrew
-
5278 / 5279 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
923 / 924 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Tiger
Sexagenary cycle position 15 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2061 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
896 / 897 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1510 / 1511 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1440 / 1439 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 15
- Digit product
- 40
- Digital root
- 6
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 8,151
- Recamán's sequence
- a(1,524) = 1,518
- Square (n²)
- 2,304,324
- Cube (n³)
- 3,497,963,832
- Divisor count
- 16
- σ(n) — sum of divisors
- 3,456
- φ(n) — Euler's totient
- 440
- Sum of prime factors
- 39
Primality
Prime factorization: 2 × 3 × 11 × 23
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand five hundred eighteen
- Ordinal
- 1518th
- Roman numeral
- MDXVIII
- Binary
- 10111101110
- Octal
- 2756
- Hexadecimal
- 0x5EE
- Base64
- Be4=
- One's complement
- 64,017 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αφιηʹ
- Mayan (base 20)
- 𝋣·𝋯·𝋲
- Chinese
- 一千五百一十八
- Chinese (financial)
- 壹仟伍佰壹拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,518 = 5
- e — Euler's number (e)
- Digit 1,518 = 0
- φ — Golden ratio (φ)
- Digit 1,518 = 4
- √2 — Pythagoras's (√2)
- Digit 1,518 = 3
- ln 2 — Natural log of 2
- Digit 1,518 = 1
- γ — Euler-Mascheroni (γ)
- Digit 1,518 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1518, here are decompositions:
- 7 + 1511 = 1518
- 19 + 1499 = 1518
- 29 + 1489 = 1518
- 31 + 1487 = 1518
- 37 + 1481 = 1518
- 47 + 1471 = 1518
- 59 + 1459 = 1518
- 67 + 1451 = 1518
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.238.
- Address
- 0.0.5.238
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.5.238
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1518 first appears in π at position 6,618 of the decimal expansion (the 6,618ordinal-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.