18979789515390

Names of 18979789515390

• Cardinal: 18979789515390 can be written as Eighteen trillion, nine hundred seventy-nine billion, seven hundred eighty-nine million, five hundred fifteen thousand, three hundred ninety.

Scientific notation

• Scientific notation: 1.897978951539 × 10¹³

Factors of 18979789515390

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 791974

Divisors of 18979789515390

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 5 6 9 10 11 15 18 22 30 31 33 45 55 62 66 71 90 93 99 110 121 142 155 165 186 198 213 242 279 310 330 341 355 363 426 465 495 558 605 639 682 710 726 781 930 990 1023 1065 1089 1210 1278 1395 1562 1705 1815 2046 2130 2178 2201 2343 2790 3069 3195 3410 3630 3751 3905 4402 4686 5115 5445 6138 6390 6603 7029 7502 7810 8591 10230 10890 11005 11253 11715 13206 14058 15345 17182 18755 19809 22010 22506 23430 24211 25773 30690 33015 33759 35145 37510 39618 42955 48422 51546 56265 66030 67518 70290 72633 77319 85910 99045 112530 121055 128865 145266 154638 168795 198090 217899 242110 257730 266321 337590 363165 386595 435798 532642 726330 773190 791851 798963 1089495 1331605 1583702 1597926 2178990 2375553 2396889 2663210 3959255 3994815 4751106 4793778 7126659 7918510 7989630 8710361 11877765 11984445 14253318 17420722 23755530 23968890 24547381 26131083 35633295 43551805 49094762 52262166 56221421 71266590 73642143 78393249 87103610 95813971 112442842 122736905 130655415 147284286 156786498 168664263 191627942 220926429 245473810 261310830 270021191 281107105 287441913 337328526 368210715 391966245 441852858 479069855 505992789 540042382 562214210 574883826 618435631 736421430 783932490 810063573 843321315 862325739 958139710 1011985578 1104632145 1236871262 1350105955 1437209565 1620127146 1686642630 1724651478 1742864051 1855306893 2209264290 2430190719 2529963945 2700211910 2874419130 2970233101 3092178155 3485728102 3710613786 4050317865 4311628695 4860381438 5059927890 5228592153 5565920679 5940466202 6184356310 6802791941 8100635730 8623257390 8714320255 8910699303 9276534465 10457184306 11131841358 12150953595 13605583882 14851165505 15685776459 17428640510 17821398606 18553068930 19171504561 20408375823 24301907190 26142960765 26732097909 27829603395 29702331010 31371552918 34013959705 38343009122 40816751646 44553496515 52285921530 53464195818 55659206790 57514513683 61225127469 68027919410 78428882295 89106993030 95857522805 102041879115 115029027366 122450254938 133660489545 156857764590 172543541049 191715045610 204083758230 210886550171 267320979090 287572568415 306125637345 345087082098 421773100342 575145136830 612251274690 632659650513 862717705245 1054432750855 1265319301026 1725435410490 1897978951539 2108865501710 3163298252565 3795957903078 6326596505130 9489894757695 18979789515390
• Sum of all divisors σ(n): 56779817342976
• Sum of proper divisors (its aliquot sum) s(n): 37800027827586
• 18979789515390 is an abundant number, because the sum of its proper divisors (37800027827586) is greater than itself. Its abundance is 18820238312196

Bases of 18979789515390

• Binary: 100010100001100010011100111001010101001111110₂
• Hexadecimal: 0x1143139CAA7E
• Base-36: 6Q770MTFI

Squares and roots of 18979789515390

• 18979789515390 squared (18979789515390²) is 360232410048508171046852100
• 18979789515390 cubed (18979789515390³) is 6837135319342346666145788248044003819000
• The square root of 18979789515390 is 4356580.0251332467
• The cube root of 18979789515390 is 26674.5517813233

Scales and comparisons

• 18,979,789,515,390 seconds is equal to 603,498 years, 31 weeks, 18 hours, 16 minutes, 30 seconds.
• To count from 1 to 18,979,789,515,390 would take you about one million, five hundred eight thousand, seven hundred forty-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 18979789515390 cubic inches would be around 2222.9 feet tall.

Recreational maths with 18979789515390

• 18979789515390 backwards is 09351598797981
• The number of decimal digits it has is: 14
• The sum of 18979789515390's digits is 81
• More coming soon!