18738129536

Names of 18738129536

• Cardinal: 18738129536 can be written as Eighteen billion, seven hundred thirty-eight million, one hundred twenty-nine thousand, five hundred thirty-six.

Scientific notation

• Scientific notation: 1.8738129536 × 10¹⁰

Factors of 18738129536

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 3077

Divisors of 18738129536

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 7 8 14 16 19 28 32 38 56 64 76 112 128 133 152 224 266 304 361 448 532 608 722 896 1064 1216 1444 2128 2432 2527 2888 3049 4256 5054 5776 6098 6859 8512 10108 11552 12196 13718 17024 20216 21343 23104 24392 27436 40432 42686 46208 48013 48784 54872 57931 80864 85372 96026 97568 109744 115862 161728 170744 192052 195136 219488 231724 323456 341488 384104 390272 405517 438976 463448 682976 768208 811034 877952 926896 1100689 1365952 1536416 1622068 1853792 2201378 2731904 3072832 3244136 3707584 4402756 6145664 6488272 7415168 7704823 8805512 12976544 15409646 17611024 20913091 25953088 30819292 35222048 41826182 51906176 61638584 70444096 83652364 123277168 140888192 146391637 167304728 246554336 292783274 334609456 493108672 585566548 669218912 986217344 1171133096 1338437824 2342266192 2676875648 4684532384 9369064768 18738129536
• Sum of all divisors σ(n): 45047280000
• Sum of proper divisors (its aliquot sum) s(n): 26309150464
• 18738129536 is an abundant number, because the sum of its proper divisors (26309150464) is greater than itself. Its abundance is 7571020928

Bases of 18738129536

• Binary: 10001011100111000010010101010000000₂
• Hexadecimal: 0x45CE12A80
• Base-36: 8LW75A8

Squares and roots of 18738129536

• 18738129536 squared (18738129536²) is 351117498507915575296
• 18738129536 cubed (18738129536³) is 6579285169397608771248409542656
• The square root of 18738129536 is 136887.2877078073
• The cube root of 18738129536 is 2656.0856712579

Scales and comparisons

• 18,738,129,536 seconds is equal to 595 years, 42 weeks, 2 days, 11 hours, 58 minutes, 56 seconds.
• To count from 1 to 18,738,129,536 would take you about one thousand, one hundred ninety-one 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 18738129536 cubic inches would be around 221.3 feet tall.

Recreational maths with 18738129536

• 18738129536 backwards is 63592183781
• The number of decimal digits it has is: 11
• The sum of 18738129536's digits is 53
• More coming soon!