18509055990

Names of 18509055990

• Cardinal: 18509055990 can be written as Eighteen billion, five hundred nine million, fifty-five thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 1.850905599 × 10¹⁰

Factors of 18509055990

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 697

Divisors of 18509055990

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 10 15 29 30 41 58 82 87 123 145 174 205 246 290 410 435 615 617 841 870 1189 1230 1234 1682 1851 2378 2523 3085 3567 3702 4205 5046 5945 6170 7134 8410 9255 11890 12615 17835 17893 18510 24389 25230 25297 34481 35670 35786 48778 50594 53679 68962 73167 75891 89465 103443 107358 121945 126485 146334 151782 172405 178930 206886 243890 252970 268395 344810 365835 379455 517215 518897 536790 731670 733613 758910 999949 1034430 1037794 1467226 1556691 1999898 2200839 2594485 2999847 3113382 3668065 4401678 4999745 5188970 5999694 7336130 7783455 9999490 11004195 14999235 15048013 15566910 21274777 22008390 29998470 30096026 42549554 45144039 63824331 75240065 90288078 106373885 127648662 150480130 212747770 225720195 319121655 451440390 616968533 638243310 1233937066 1850905599 3084842665 3701811198 6169685330 9254527995 18509055990
• Sum of all divisors σ(n): 47206696320
• Sum of proper divisors (its aliquot sum) s(n): 28697640330
• 18509055990 is an abundant number, because the sum of its proper divisors (28697640330) is greater than itself. Its abundance is 10188584340

Bases of 18509055990

• Binary: 10001001111001110011100011111110110₂
• Hexadecimal: 0x44F39C7F6
• Base-36: 8I3TB06

Squares and roots of 18509055990

• 18509055990 squared (18509055990²) is 342585153640954880100
• 18509055990 cubed (18509055990³) is 6340927790083186232834636799000
• The square root of 18509055990 is 136047.9914956483
• The cube root of 18509055990 is 2645.2177183403

Scales and comparisons

• 18,509,055,990 seconds is equal to 588 years, 27 weeks, 4 days, 4 hours, 26 minutes, 30 seconds.
• To count from 1 to 18,509,055,990 would take you about one thousand, one hundred seventy-seven 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 18509055990 cubic inches would be around 220.4 feet tall.

Recreational maths with 18509055990

• 18509055990 backwards is 09955090581
• The number of decimal digits it has is: 11
• The sum of 18509055990's digits is 51
• More coming soon!