138129151930

Names of 138129151930

• Cardinal: 138129151930 can be written as One hundred thirty-eight billion, one hundred twenty-nine million, one hundred fifty-one thousand, nine hundred thirty.

Scientific notation

• Scientific notation: 1.3812915193 × 10¹¹

Factors of 138129151930

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1100731

Divisors of 138129151930

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 5 7 10 11 14 22 35 55 70 77 110 154 163 326 385 770 815 1141 1630 1793 2282 3586 5705 8965 11410 12551 17930 25102 62755 125510 1100543 2201086 5502715 7703801 11005430 12105973 15407602 24211946 38519005 60529865 77038010 84741811 121059730 169483622 179388509 358777018 423709055 847418110 896942545 1255719563 1793885090 1973273599 2511439126 3946547198 6278597815 9866367995 12557195630 13812915193 19732735990 27625830386 69064575965 138129151930
• Sum of all divisors σ(n): 311885365248
• Sum of proper divisors (its aliquot sum) s(n): 173756213318
• 138129151930 is an abundant number, because the sum of its proper divisors (173756213318) is greater than itself. Its abundance is 35627061388

Bases of 138129151930

• Binary: 10000000101001001000111001011110111010₂
• Hexadecimal: 0x20292397BA
• Base-36: 1RGEJ3QY

Squares and roots of 138129151930

• 138129151930 squared (138129151930²) is 19079662612901022724900
• 138129151930 cubed (138129151930³) is 2635457615830546146020094694057000
• The square root of 138129151930 is 371657.3044216943
• The cube root of 138129151930 is 5169.2608556877

Scales and comparisons

• 138,129,151,930 seconds is equal to 4,392 years, 4 weeks, 1 day, 52 minutes, 10 seconds.
• To count from 1 to 138,129,151,930 would take you about eight thousand, seven hundred eighty-four 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 138129151930 cubic inches would be around 430.8 feet tall.

Recreational maths with 138129151930

• 138129151930 backwards is 039151921831
• The number of decimal digits it has is: 12
• The sum of 138129151930's digits is 43
• More coming soon!