138388561641

Names of 138388561641

• Cardinal: 138388561641 can be written as One hundred thirty-eight billion, three hundred eighty-eight million, five hundred sixty-one thousand, six hundred forty-one.

Scientific notation

• Scientific notation: 1.38388561641 × 10¹¹

Factors of 138388561641

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2886

Divisors of 138388561641

• Number of divisors d(n): 90
• Complete list of divisors:
  1 3 9 11 27 33 71 81 99 121 213 297 363 639 781 891 1089 1917 2343 2801 3267 5041 5751 7029 8403 8591 9801 15123 21087 25209 25773 30811 45369 55451 63261 75627 77319 92433 136107 166353 198871 226881 231957 277299 338921 408321 499059 596613 609961 695871 831897 1016763 1497177 1789839 1829883 2187581 2495691 3050289 4491531 5369517 5489649 6562743 9150867 14119841 16108551 16468947 19688229 24063391 27452601 42359523 49406841 59064687 72190173 127078569 155318251 177194061 216570519 381235707 465954753 649711557 1143707121 1397864259 1708500761 1949134671 4193592777 5125502283 12580778331 15376506849 46129520547 138388561641
• Sum of all divisors σ(n): 230558392218
• Sum of proper divisors (its aliquot sum) s(n): 92169830577
• 138388561641 is a deficient number, because the sum of its proper divisors (92169830577) is less than itself. Its deficiency is 46218731064

Bases of 138388561641

• Binary: 10000000111000100110011101111011101001₂
• Hexadecimal: 0x203899DEE9
• Base-36: 1RKOZ5K9

Squares and roots of 138388561641

• 138388561641 squared (138388561641²) is 19151393993064856612881
• 138388561641 cubed (138388561641³) is 2650333868120333035882508743097721
• The square root of 138388561641 is 372006.1311873771
• The cube root of 138388561641 is 5172.4948288005

Scales and comparisons

• 138,388,561,641 seconds is equal to 4,400 years, 17 weeks, 11 hours, 7 minutes, 21 seconds.
• To count from 1 to 138,388,561,641 would take you about eight thousand, eight hundred 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 138388561641 cubic inches would be around 431 feet tall.

Recreational maths with 138388561641

• 138388561641 backwards is 146165883831
• The number of decimal digits it has is: 12
• The sum of 138388561641's digits is 54
• More coming soon!