1,018
1,018 is a composite number, even, a calendar year.
Historical context — 1018 AD
Calendar year
Year 1018 (MXVIII) was a common year starting on Wednesday of the Julian calendar.
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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, 1018
- Ended on
-
Thursday
December 31, 1018
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
1010s
1010–1019
- Century
-
11th century
1001–1100
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
1,008
1008 years before 2026.
In other calendars
- Hebrew
-
4778 / 4779 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
408 / 409 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Horse
Sexagenary cycle position 55 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1561 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
396 / 397 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1010 / 1011 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
940 / 939 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 10
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 10 bits
- Reversed
- 8,101
- Flips to (rotate 180°)
- 8,101
- Recamán's sequence
- a(4,383) = 1,018
- Square (n²)
- 1,036,324
- Cube (n³)
- 1,054,977,832
- Divisor count
- 4
- σ(n) — sum of divisors
- 1,530
- φ(n) — Euler's totient
- 508
- Sum of prime factors
- 511
Primality
Prime factorization: 2 × 509
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand eighteen
- Ordinal
- 1018th
- Roman numeral
- MXVIII
- Binary
- 1111111010
- Octal
- 1772
- Hexadecimal
- 0x3FA
- Base64
- A/o=
- One's complement
- 64,517 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αιηʹ
- Mayan (base 20)
- 𝋢·𝋪·𝋲
- Chinese
- 一千零一十八
- Chinese (financial)
- 壹仟零壹拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,018 = 5
- e — Euler's number (e)
- Digit 1,018 = 4
- φ — Golden ratio (φ)
- Digit 1,018 = 6
- √2 — Pythagoras's (√2)
- Digit 1,018 = 6
- ln 2 — Natural log of 2
- Digit 1,018 = 7
- γ — Euler-Mascheroni (γ)
- Digit 1,018 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1018, here are decompositions:
- 5 + 1013 = 1018
- 41 + 977 = 1018
- 47 + 971 = 1018
- 71 + 947 = 1018
- 89 + 929 = 1018
- 107 + 911 = 1018
- 131 + 887 = 1018
- 137 + 881 = 1018
Showing the first eight; more decompositions exist.
UTF-8 encoding: CF BA (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.250.
- Address
- 0.0.3.250
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.3.250
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1018 first appears in π at position 1,223 of the decimal expansion (the 1,223ordinal-suffix:rd 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.