1,098
1,098 is a composite number, even, a calendar year.
Historical context — 1098 AD
Calendar year
Year 1098 (MXCVIII) was a common year starting on Friday 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, 1098
- Ended on
-
Saturday
December 31, 1098
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
1090s
1090–1099
- Century
-
11th century
1001–1100
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
928
928 years before 2026.
In other calendars
- Hebrew
-
4858 / 4859 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
491 / 492 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
-
1641 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
476 / 477 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1090 / 1091 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1020 / 1019 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 18
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 8,901
- Flips to (rotate 180°)
- 8,601
- Recamán's sequence
- a(304) = 1,098
- Square (n²)
- 1,205,604
- Cube (n³)
- 1,323,753,192
- Divisor count
- 12
- σ(n) — sum of divisors
- 2,418
- φ(n) — Euler's totient
- 360
- Sum of prime factors
- 69
Primality
Prime factorization: 2 × 3 2 × 61
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand ninety-eight
- Ordinal
- 1098th
- Roman numeral
- MXCVIII
- Binary
- 10001001010
- Octal
- 2112
- Hexadecimal
- 0x44A
- Base64
- BEo=
- One's complement
- 64,437 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αϟηʹ
- Mayan (base 20)
- 𝋢·𝋮·𝋲
- Chinese
- 一千零九十八
- Chinese (financial)
- 壹仟零玖拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,098 = 3
- e — Euler's number (e)
- Digit 1,098 = 8
- φ — Golden ratio (φ)
- Digit 1,098 = 4
- √2 — Pythagoras's (√2)
- Digit 1,098 = 0
- ln 2 — Natural log of 2
- Digit 1,098 = 9
- γ — Euler-Mascheroni (γ)
- Digit 1,098 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1098, here are decompositions:
- 5 + 1093 = 1098
- 7 + 1091 = 1098
- 11 + 1087 = 1098
- 29 + 1069 = 1098
- 37 + 1061 = 1098
- 47 + 1051 = 1098
- 59 + 1039 = 1098
- 67 + 1031 = 1098
Showing the first eight; more decompositions exist.
UTF-8 encoding: D1 8A (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.74.
- Address
- 0.0.4.74
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.4.74
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1098 first appears in π at position 3,405 of the decimal expansion (the 3,405ordinal-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.