138549729690

Names of 138549729690

• Cardinal: 138549729690 can be written as One hundred thirty-eight billion, five hundred forty-nine million, seven hundred twenty-nine thousand, six hundred ninety.

Scientific notation

• Scientific notation: 1.3854972969 × 10¹¹

Factors of 138549729690

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 810880

Divisors of 138549729690

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 211 270 405 422 633 810 1055 1266 1899 2110 3165 3798 5697 6330 9495 11394 17091 18990 28485 34182 56970 85455 170910 810659 1621318 2431977 4053295 4863954 7295931 8106590 12159885 14591862 21887793 24319770 36479655 43775586 65663379 72959310 109438965 131326758 171049049 218877930 328316895 342098098 513147147 656633790 855245245 1026294294 1539441441 1710490490 2565735735 3078882882 4618324323 5131471470 7697207205 9236648646 13854972969 15394414410 23091621615 27709945938 46183243230 69274864845 138549729690
• Sum of all divisors σ(n): 374310905760
• Sum of proper divisors (its aliquot sum) s(n): 235761176070
• 138549729690 is an abundant number, because the sum of its proper divisors (235761176070) is greater than itself. Its abundance is 97211446380

Bases of 138549729690

• Binary: 10000001000010001101010001100110011010₂
• Hexadecimal: 0x204235199A
• Base-36: 1RNCXJMI

Squares and roots of 138549729690

• 138549729690 squared (138549729690²) is 19196027597172067496100
• 138549729690 cubed (138549729690³) is 2659604434709970160003090129209000
• The square root of 138549729690 is 372222.6883063417
• The cube root of 138549729690 is 5174.5020213953

Scales and comparisons

• 138,549,729,690 seconds is equal to 4,405 years, 23 weeks, 3 days, 20 hours, 1 minute, 30 seconds.
• To count from 1 to 138,549,729,690 would take you about eight thousand, eight hundred ten 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 138549729690 cubic inches would be around 431.2 feet tall.

Recreational maths with 138549729690

• 138549729690 backwards is 096927945831
• The number of decimal digits it has is: 12
• The sum of 138549729690's digits is 63
• More coming soon!