1,166
1,166 is a composite number, even, a calendar year.
Historical context — 1166 AD
Calendar year
Year 1166 (MCLXVI) was a common year starting on Saturday 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
- 52
- Started on
-
Saturday
January 1, 1166
- Ended on
-
Saturday
December 31, 1166
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
1160s
1160–1169
- Century
-
12th century
1101–1200
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
860
860 years before 2026.
In other calendars
- Hebrew
-
4926 / 4927 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
561 / 562 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Fire zodiac:Dog
Sexagenary cycle position 23 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1709 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
544 / 545 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1158 / 1159 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1088 / 1087 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 14
- Digit product
- 36
- Digital root
- 5
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 6,611
- Flips to (rotate 180°)
- 9,911
- Recamán's sequence
- a(1,840) = 1,166
- Square (n²)
- 1,359,556
- Cube (n³)
- 1,585,242,296
- Divisor count
- 8
- σ(n) — sum of divisors
- 1,944
- φ(n) — Euler's totient
- 520
- Sum of prime factors
- 66
Primality
Prime factorization: 2 × 11 × 53
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand one hundred sixty-six
- Ordinal
- 1166th
- Roman numeral
- MCLXVI
- Binary
- 10010001110
- Octal
- 2216
- Hexadecimal
- 0x48E
- Base64
- BI4=
- One's complement
- 64,369 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αρξϛʹ
- Mayan (base 20)
- 𝋢·𝋲·𝋦
- Chinese
- 一千一百六十六
- Chinese (financial)
- 壹仟壹佰陸拾陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,166 = 3
- e — Euler's number (e)
- Digit 1,166 = 6
- φ — Golden ratio (φ)
- Digit 1,166 = 1
- √2 — Pythagoras's (√2)
- Digit 1,166 = 1
- ln 2 — Natural log of 2
- Digit 1,166 = 2
- γ — Euler-Mascheroni (γ)
- Digit 1,166 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1166, here are decompositions:
- 3 + 1163 = 1166
- 13 + 1153 = 1166
- 37 + 1129 = 1166
- 43 + 1123 = 1166
- 73 + 1093 = 1166
- 79 + 1087 = 1166
- 97 + 1069 = 1166
- 103 + 1063 = 1166
Showing the first eight; more decompositions exist.
UTF-8 encoding: D2 8E (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.142.
- Address
- 0.0.4.142
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.4.142
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1166 first appears in π at position 3,993 of the decimal expansion (the 3,993ordinal-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.