1998211007538

Names of 1998211007538

• Cardinal: 1998211007538 can be written as One trillion, nine hundred ninety-eight billion, two hundred eleven million, seven thousand, five hundred thirty-eight.

Scientific notation

• Scientific notation: 1.998211007538 × 10¹²

Factors of 1998211007538

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1862

Divisors of 1998211007538

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 6 9 18 27 31 54 62 79 81 93 158 162 186 237 243 279 474 486 558 711 837 961 1422 1674 1747 1922 2133 2449 2511 2883 3494 4266 4898 5022 5241 5766 6399 7347 7533 8649 10482 12798 14694 15066 15723 17298 19197 22041 25947 29791 31446 38394 44082 47169 51894 54157 59582 66123 75919 77841 89373 94338 108314 132246 138013 141507 151838 155682 162471 178746 198369 227757 233523 268119 276026 283014 324942 396738 414039 424521 455514 467046 487413 536238 595107 683271 804357 828078 849042 974826 1190214 1242117 1366542 1462239 1608714 1678867 2049813 2353489 2413071 2484234 2924478 3357734 3726351 4099626 4278403 4386717 4706978 4826142 5036601 6149439 7060467 7239213 7452702 8556806 8773434 10073202 11179053 12298878 12835209 13160151 14120934 14478426 15109803 18448317 21181401 22358106 25670418 26320302 30219606 33537159 36896634 38505627 42362802 45329409 52044877 63544203 67074318 77011254 90658818 104089754 115516881 127088406 132630493 135988227 156134631 190632609 231033762 265260986 271976454 312269262 346550643 381265218 397891479 407964681 468403893 571897827 693101286 795782958 815929362 936807786 1039651929 1143795654 1193674437 1405211679 2079303858 2387348874 2810423358 3581023311 4111545283 4215635037 7162046622 8223090566 8431270074 10743069933 12334635849 12646905111 21486139866 24669271698 25293810222 32229209799 37003907547 64458419598 74007815094 111011722641 222023445282 333035167923 666070335846 999105503769 1998211007538
• Sum of all divisors σ(n): 4700879339520
• Sum of proper divisors (its aliquot sum) s(n): 2702668331982
• 1998211007538 is an abundant number, because the sum of its proper divisors (2702668331982) is greater than itself. Its abundance is 704457324444

Bases of 1998211007538

• Binary: 11101000100111110101010000100010000110010₂
• Hexadecimal: 0x1D13EA84432
• Base-36: PHYR8P4I

Squares and roots of 1998211007538

• 1998211007538 squared (1998211007538²) is 3992847230646029092821444
• 1998211007538 cubed (1998211007538³) is 7978551287694514864205597738372044872
• The square root of 1998211007538 is 1413580.9165159241
• The cube root of 1998211007538 is 12595.4527295207

Scales and comparisons

• 1,998,211,007,538 seconds is equal to 63,536 years, 48 weeks, 2 days, 5 hours, 12 minutes, 18 seconds.
• To count from 1 to 1,998,211,007,538 would take you about one hundred fifty-eight thousand, eight hundred forty-two 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 1998211007538 cubic inches would be around 1049.6 feet tall.

Recreational maths with 1998211007538

• 1998211007538 backwards is 8357001128991
• 1998211007538 is a Harshad number.
• The number of decimal digits it has is: 13
• The sum of 1998211007538's digits is 54
• More coming soon!