2,198
2,198 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 20
- Digit product
- 144
- Digital root
- 2
- Palindrome
- No
- Bit width
- 12 bits
- Reversed
- 8,912
- Recamán's sequence
- a(3,355) = 2,198
- Square (n²)
- 4,831,204
- Cube (n³)
- 10,618,986,392
- Divisor count
- 8
- σ(n) — sum of divisors
- 3,792
- φ(n) — Euler's totient
- 936
- Sum of prime factors
- 166
Primality
Prime factorization: 2 × 7 × 157
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- two thousand one hundred ninety-eight
- Ordinal
- 2198th
- Roman numeral
- MMCXCVIII
- Binary
- 100010010110
- Octal
- 4226
- Hexadecimal
- 0x896
- Base64
- CJY=
- One's complement
- 63,337 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵βρϟηʹ
- Mayan (base 20)
- 𝋥·𝋩·𝋲
- Chinese
- 二千一百九十八
- Chinese (financial)
- 貳仟壹佰玖拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 2,198 = 1
- e — Euler's number (e)
- Digit 2,198 = 0
- φ — Golden ratio (φ)
- Digit 2,198 = 9
- √2 — Pythagoras's (√2)
- Digit 2,198 = 2
- ln 2 — Natural log of 2
- Digit 2,198 = 7
- γ — Euler-Mascheroni (γ)
- Digit 2,198 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 2198, here are decompositions:
- 19 + 2179 = 2198
- 37 + 2161 = 2198
- 61 + 2137 = 2198
- 67 + 2131 = 2198
- 109 + 2089 = 2198
- 181 + 2017 = 2198
- 199 + 1999 = 2198
- 211 + 1987 = 2198
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.8.150.
- Address
- 0.0.8.150
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.8.150
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 2198 first appears in π at position 2,820 of the decimal expansion (the 2,820ordinal-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.