18193193920

Names of 18193193920

• Cardinal: 18193193920 can be written as Eighteen billion, one hundred ninety-three million, one hundred ninety-three thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.819319392 × 10¹⁰

Factors of 18193193920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 8840

Divisors of 18193193920

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 32 40 44 55 64 80 88 110 160 176 220 320 352 440 631 704 880 1262 1760 2524 3155 3520 5048 6310 6941 8191 10096 12620 13882 16382 20192 25240 27764 32764 34705 40384 40955 50480 55528 65528 69410 81910 90101 100960 111056 131056 138820 163820 180202 201920 222112 262112 277640 327640 360404 444224 450505 524224 555280 655280 720808 901010 1110560 1310560 1441616 1802020 2221120 2621120 2883232 3604040 5168521 5766464 7208080 10337042 14416160 20674084 25842605 28832320 41348168 51685210 56853731 82696336 103370420 113707462 165392672 206740840 227414924 284268655 330785344 413481680 454829848 568537310 826963360 909659696 1137074620 1653926720 1819319392 2274149240 3638638784 4548298480 9096596960 18193193920
• Sum of all divisors σ(n): 47341633536
• Sum of proper divisors (its aliquot sum) s(n): 29148439616
• 18193193920 is an abundant number, because the sum of its proper divisors (29148439616) is greater than itself. Its abundance is 10955245696

Bases of 18193193920

• Binary: 10000111100011001100001101111000000₂
• Hexadecimal: 0x43C661BC0
• Base-36: 8CVRA9S

Squares and roots of 18193193920

• 18193193920 squared (18193193920²) is 330992305010724966400
• 18193193920 cubed (18193193920³) is 6021807191087906993500684288000
• The square root of 18193193920 is 134882.1482628447
• The cube root of 18193193920 is 2630.0841833811

Scales and comparisons

• 18,193,193,920 seconds is equal to 578 years, 25 weeks, 2 days, 8 hours, 58 minutes, 40 seconds.
• To count from 1 to 18,193,193,920 would take you about one thousand, one hundred fifty-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 18193193920 cubic inches would be around 219.2 feet tall.

Recreational maths with 18193193920

• 18193193920 backwards is 02939139181
• The number of decimal digits it has is: 11
• The sum of 18193193920's digits is 46
• More coming soon!