138191118

Names of 138191118

• Cardinal: 138191118 can be written as One hundred thirty-eight million, one hundred ninety-one thousand, one hundred eighteen.

Scientific notation

• Scientific notation: 1.38191118 × 10⁸

Factors of 138191118

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 969

Divisors of 138191118

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 13 26 31 39 62 67 78 93 134 186 201 402 403 806 853 871 1209 1706 1742 2077 2418 2559 2613 4154 5118 5226 6231 11089 12462 22178 26443 27001 33267 52886 54002 57151 66534 79329 81003 114302 158658 162006 171453 342906 343759 687518 742963 1031277 1485926 1771681 2062554 2228889 3543362 4457778 5315043 10630086 23031853 46063706 69095559 138191118
• Sum of all divisors σ(n): 312195072
• Sum of proper divisors (its aliquot sum) s(n): 174003954
• 138191118 is an abundant number, because the sum of its proper divisors (174003954) is greater than itself. Its abundance is 35812836

Bases of 138191118

• Binary: 1000001111001010000100001110₂
• Hexadecimal: 0x83CA10E
• Base-36: 2A9WY6

Squares and roots of 138191118

• 138191118 squared (138191118²) is 19096785094089924
• 138191118 cubed (138191118³) is 2639006082358021790095032
• The square root of 138191118 is 11755.4718323001
• The cube root of 138191118 is 517.0033733553

Scales and comparisons

• 138,191,118 seconds is equal to 4 years, 20 weeks, 3 days, 10 hours, 25 minutes, 18 seconds.
• To count from 1 to 138,191,118 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 138191118 cubic inches would be around 43.1 feet tall.

Recreational maths with 138191118

• 138191118 backwards is 811191831
• The number of decimal digits it has is: 9
• The sum of 138191118's digits is 33
• More coming soon!