18218676399638

Names of 18218676399638

• Cardinal: 18218676399638 can be written as Eighteen trillion, two hundred eighteen billion, six hundred seventy-six million, three hundred ninety-nine thousand, six hundred thirty-eight.

Scientific notation

• Scientific notation: 1.8218676399638 × 10¹³

Factors of 18218676399638

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 849

Divisors of 18218676399638

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 11 13 22 26 31 62 143 173 286 341 346 403 619 682 806 961 1238 1903 1922 2249 3806 4433 4498 5363 6809 8047 8866 10571 10726 12493 13618 16094 19189 21142 24739 24986 38378 49478 58993 69719 88517 107087 117986 137423 139438 166253 177034 211079 214174 249457 274846 332506 383161 422158 498914 594859 766322 766909 1177957 1189718 1392131 1533818 1828783 2161289 2355914 2744027 2784262 3319697 3657566 4214771 4322578 4981093 5488054 6543449 6639394 7733167 8429542 9962186 11877991 13086898 15313441 15466334 23755982 23774179 30626882 36516667 43156061 47548358 54792023 66286853 73033334 85064837 86312122 102910607 109584046 130657901 132573706 154413883 170129674 205821214 261315802 308827766 368217721 474716671 729155383 736435442 861729089 949433342 1132016677 1337837891 1458310766 1698552713 1723458178 2054892443 2264033354 2675675782 3397105426 4050394931 4109784886 4786830373 8100789862 9479019979 9573660746 14716216801 18958039958 22603816873 26713601759 29432433602 45207633746 52655134103 53427203518 63701665733 105310268206 127403331466 293849619349 587699238698 700718323063 828121654529 1401436646126 1656243309058 9109338199819 18218676399638
• Sum of all divisors σ(n): 33420466165968
• Sum of proper divisors (its aliquot sum) s(n): 15201789766330
• 18218676399638 is a deficient number, because the sum of its proper divisors (15201789766330) is less than itself. Its deficiency is 3016886633308

Bases of 18218676399638

• Binary: 100001001000111011101101111000010111000010110₂
• Hexadecimal: 0x1091DDBC2E16
• Base-36: 6GHJLJAQE

Squares and roots of 18218676399638

• 18218676399638 squared (18218676399638²) is 331920169754726638286531044
• 18218676399638 cubed (18218676399638³) is 6047146163274276891950948526130437362072
• The square root of 18218676399638 is 4268334.1480767413
• The cube root of 18218676399638 is 26313.1156178101

Scales and comparisons

• 18,218,676,399,638 seconds is equal to 579,297 years, 28 weeks, 6 days, 4 hours, 20 minutes, 38 seconds.
• To count from 1 to 18,218,676,399,638 would take you about one million, four hundred forty-eight thousand, two hundred forty-three 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 18218676399638 cubic inches would be around 2192.8 feet tall.

Recreational maths with 18218676399638

• 18218676399638 backwards is 83699367681281
• The number of decimal digits it has is: 14
• The sum of 18218676399638's digits is 77
• More coming soon!