18,116
18,116 is a composite number, even.
18,116 (eighteen thousand one hundred sixteen) is an even 5-digit number. It is a composite number with 12 divisors, and factors as 2² × 7 × 647. Its proper divisors sum to 18,172, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x46C4.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 17
- Digit product
- 48
- Digital root
- 8
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 61,181
- Flips to (rotate 180°)
- 91,181
- Recamán's sequence
- a(15,672) = 18,116
- Square (n²)
- 328,189,456
- Cube (n³)
- 5,945,480,184,896
- Divisor count
- 12
- σ(n) — sum of divisors
- 36,288
- φ(n) — Euler's totient
- 7,752
- Sum of prime factors
- 658
Primality
Prime factorization: 2 2 × 7 × 647
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√18,116 = [134; (1, 1, 2, 8, 1, 7, 1, 1, 12, 1, 13, 4, 7, 2, 4, 10, 1, 1, 5, 4, 1, 8, 1, 4, …)]
Period length 44 — the block in parentheses repeats forever.
Representations
- In words
- eighteen thousand one hundred sixteen
- Ordinal
- 18116th
- Binary
- 100011011000100
- Octal
- 43304
- Hexadecimal
- 0x46C4
- Base64
- RsQ=
- One's complement
- 47,419 (16-bit)
- Scientific notation
- 1.8116 × 10⁴
- As a duration
- 18,116 s = 5 hours, 1 minute, 56 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιηριϛʹ
- Mayan (base 20)
- 𝋢·𝋥·𝋥·𝋰
- Chinese
- 一萬八千一百一十六
- Chinese (financial)
- 壹萬捌仟壹佰壹拾陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 18,116 = 1
- e — Euler's number (e)
- Digit 18,116 = 5
- φ — Golden ratio (φ)
- Digit 18,116 = 1
- √2 — Pythagoras's (√2)
- Digit 18,116 = 2
- ln 2 — Natural log of 2
- Digit 18,116 = 4
- γ — Euler-Mascheroni (γ)
- Digit 18,116 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 18116, here are decompositions:
- 19 + 18097 = 18116
- 67 + 18049 = 18116
- 73 + 18043 = 18116
- 103 + 18013 = 18116
- 127 + 17989 = 18116
- 139 + 17977 = 18116
- 157 + 17959 = 18116
- 193 + 17923 = 18116
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 9B 84 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.70.196.
- Address
- 0.0.70.196
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.70.196
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 18,116 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C♯10 (17739.7 Hz, +36¢)
- Scientific pitch (C4 = 256 Hz): D10 (18390.4 Hz, -26¢)
- Baroque pitch (A4 = 415 Hz): D10 (17726.7 Hz, +38¢)
The digit sequence 18116 first appears in π at position 155,416 of the decimal expansion (the 155,416ordinal-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.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.