19998469890

Names of 19998469890

• Cardinal: 19998469890 can be written as Nineteen billion, nine hundred ninety-eight million, four hundred sixty-nine thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 1.999846989 × 10¹⁰

Factors of 19998469890

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 688

Divisors of 19998469890

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 27 29 30 35 42 45 54 58 63 70 71 81 87 90 105 126 135 142 145 162 174 189 203 210 213 243 261 270 290 315 355 378 405 406 426 435 486 497 522 567 571 609 630 639 710 783 810 870 945 994 1015 1065 1134 1142 1215 1218 1278 1305 1491 1566 1701 1713 1827 1890 1917 2030 2059 2130 2349 2430 2485 2610 2835 2855 2982 3045 3195 3402 3426 3654 3834 3915 3997 4118 4473 4698 4970 5139 5481 5670 5710 5751 6090 6177 6390 7047 7455 7830 7994 8505 8565 8946 9135 9585 10278 10295 10962 11502 11745 11991 12354 13419 14094 14413 14910 15417 16443 16559 17010 17130 17253 18270 18531 19170 19985 20590 22365 23490 23982 25695 26838 27405 28755 28826 30834 30885 32886 33118 34506 35235 35973 37062 39970 40257 40541 43239 44730 46251 49329 49677 51390 54810 55593 57510 59955 61770 67095 70470 71946 72065 77085 80514 81082 82215 82795 86265 86478 92502 92655 98658 99354 107919 111186 115913 119910 120771 121623 129717 134190 138753 144130 149031 154170 164430 165590 166779 172530 179865 185310 201285 202705 215838 216195 231255 231826 241542 243246 246645 248385 259434 277506 277965 283787 298062 323757 333558 347739 359730 364869 389151 402570 405410 432390 447093 462510 493290 496770 500337 539595 555930 567574 579565 603855 608115 647514 648585 693765 695478 729738 745155 778302 833895 851361 894186 971271 1000674 1043217 1079190 1094607 1159130 1167453 1175689 1207710 1216230 1297170 1341279 1387530 1418935 1490310 1618785 1667790 1702722 1738695 1824345 1942542 1945755 2086434 2189214 2235465 2334906 2351378 2501685 2554083 2682558 2837870 3129651 3237570 3283821 3477390 3502359 3527067 3648690 3891510 4023837 4256805 4470930 4856355 5003370 5108166 5216085 5473035 5837265 5878445 6259302 6567642 6706395 7004718 7054134 7662249 8047674 8229823 8513610 9388953 9712710 9851463 10432170 10581201 10946070 11674530 11756890 12770415 13412790 15324498 15648255 16419105 16459646 17511795 17635335 18777906 19702926 20119185 21162402 22986747 24689469 25540830 28166859 31296510 31743603 32838210 35023590 35270670 38311245 40238370 41149115 45973494 46944765 49257315 49378938 52906005 56333718 63487206 68960241 74068407 76622490 82298230 93889530 95230809 98514630 105812010 114933735 123447345 137920482 140834295 148136814 158718015 190461618 222205221 229867470 246894690 281668590 285692427 317436030 344801205 370342035 444410442 476154045 571384854 666615663 689602410 740684070 952308090 1111026105 1333231326 1428462135 1999846989 2222052210 2856924270 3333078315 3999693978 6666156630 9999234945 19998469890
• Sum of all divisors σ(n): 64761016320
• Sum of proper divisors (its aliquot sum) s(n): 44762546430
• 19998469890 is an abundant number, because the sum of its proper divisors (44762546430) is greater than itself. Its abundance is 24764076540

Bases of 19998469890

• Binary: 10010101000000000000110111100000010₂
• Hexadecimal: 0x4A8006F02
• Base-36: 96QKM4I

Squares and roots of 19998469890

• 19998469890 squared (19998469890²) is 399938797941236612100
• 19998469890 cubed (19998469890³) is 7998164008470614376447459669000
• The square root of 19998469890 is 141415.9463780517
• The cube root of 19998469890 is 2714.3483922041

Scales and comparisons

• 19,998,469,890 seconds is equal to 635 years, 46 weeks, 1 day, 18 hours, 31 minutes, 30 seconds.
• To count from 1 to 19,998,469,890 would take you about one thousand, two hundred seventy-one 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 19998469890 cubic inches would be around 226.2 feet tall.

Recreational maths with 19998469890

• 19998469890 backwards is 09896489991
• The number of decimal digits it has is: 11
• The sum of 19998469890's digits is 72
• More coming soon!