138145165

Names of 138145165

• Cardinal: 138145165 can be written as One hundred thirty-eight million, one hundred forty-five thousand, one hundred sixty-five.

Scientific notation

• Scientific notation: 1.38145165 × 10⁸

Factors of 138145165

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 17519

Divisors of 138145165

• Number of divisors d(n): 8
• Complete list of divisors:
  1 5 1753 8765 15761 78805 27629033 138145165
• Sum of all divisors σ(n): 165879288
• Sum of proper divisors (its aliquot sum) s(n): 27734123
• 138145165 is a deficient number, because the sum of its proper divisors (27734123) is less than itself. Its deficiency is 110411042

Bases of 138145165

• Binary: 1000001110111110110110001101₂
• Hexadecimal: 0x83BED8D
• Base-36: 2A8XHP

Squares and roots of 138145165

• 138145165 squared (138145165²) is 19084086612877225
• 138145165 cubed (138145165³) is 2636374294010215372367125
• The square root of 138145165 is 11753.5171331817
• The cube root of 138145165 is 516.9460602413

Scales and comparisons

• 138,145,165 seconds is equal to 4 years, 20 weeks, 2 days, 21 hours, 39 minutes, 25 seconds.
• To count from 1 to 138,145,165 would take you about six years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 138145165 cubic inches would be around 43.1 feet tall.

Recreational maths with 138145165

• 138145165 backwards is 561541831
• The number of decimal digits it has is: 9
• The sum of 138145165's digits is 34
• More coming soon!