138,165
138,165 is a composite number, odd.
138,165 (one hundred thirty-eight thousand one hundred sixty-five) is an odd 6-digit number. It is a composite number with 16 divisors, and factors as 3 × 5 × 61 × 151. Written other ways, in hexadecimal, 0x21BB5.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 720
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 561,831
- Recamán's sequence
- a(492,497) = 138,165
- Square (n²)
- 19,089,567,225
- Cube (n³)
- 2,637,510,055,642,125
- Divisor count
- 16
- σ(n) — sum of divisors
- 226,176
- φ(n) — Euler's totient
- 72,000
- Sum of prime factors
- 220
Primality
Prime factorization: 3 × 5 × 61 × 151
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,165 = [371; (1, 2, 2, 1, 1, 9, 5, 5, 1, 18, 4, 2, 11, 1, 17, 4, 1, 2, 2, 3, 1, 38, 2, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand one hundred sixty-five
- Ordinal
- 138165th
- Binary
- 100001101110110101
- Octal
- 415665
- Hexadecimal
- 0x21BB5
- Base64
- Ahu1
- One's complement
- 4,294,829,130 (32-bit)
- Scientific notation
- 1.38165 × 10⁵
- As a duration
- 138,165 s = 1 day, 14 hours, 22 minutes, 45 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληρξεʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋨·𝋥
- Chinese
- 一十三萬八千一百六十五
- Chinese (financial)
- 壹拾參萬捌仟壹佰陸拾伍
Also seen as
UTF-8 encoding: F0 A1 AE B5 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.181.
- Address
- 0.2.27.181
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.181
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 138,165 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.