18910440640

Names of 18910440640

• Cardinal: 18910440640 can be written as Eighteen billion, nine hundred ten million, four hundred forty thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.891044064 × 10¹⁰

Factors of 18910440640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 513

Divisors of 18910440640

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 26 28 29 32 35 40 49 52 56 58 64 65 70 80 91 98 104 112 116 130 140 145 160 182 196 203 208 224 232 245 260 280 290 320 343 364 377 392 406 416 448 455 457 464 490 520 560 580 637 686 728 754 784 812 832 910 914 928 980 1015 1040 1120 1160 1274 1372 1421 1456 1508 1568 1624 1715 1820 1828 1856 1885 1960 2030 2080 2240 2285 2320 2548 2639 2744 2842 2912 3016 3136 3185 3199 3248 3430 3640 3656 3770 3920 4060 4160 4459 4570 4640 5096 5278 5488 5684 5824 5941 6032 6370 6398 6496 6860 7105 7280 7312 7540 7840 8120 8918 9140 9280 9947 10192 10556 10976 11368 11882 12064 12740 12796 12992 13195 13253 13720 14210 14560 14624 15080 15680 15995 16240 17836 18280 18473 19894 20384 21112 21952 22295 22393 22736 23764 24128 25480 25592 26390 26506 27440 28420 29120 29248 29705 30160 31990 32480 35672 36560 36946 39788 40768 41587 42224 44590 44786 45472 47528 49735 50960 51184 52780 53012 54880 56840 59410 60320 63980 64960 66265 71344 73120 73892 79576 83174 84448 89180 89572 90944 92365 92771 95056 99470 101920 102368 105560 106024 109760 111965 113680 118820 120640 127960 129311 132530 142688 146240 147784 156751 159152 166348 168896 172289 178360 179144 184730 185542 190112 198940 203840 204736 207935 211120 212048 223930 227360 237640 255920 258622 265060 285376 291109 295568 313502 318304 332696 344578 356720 358288 369460 371084 380224 397880 415870 422240 424096 447860 454720 463855 475280 511840 517244 530120 582218 591136 627004 636608 646555 649397 665392 689156 713440 716576 738920 742168 783755 795760 831740 844480 848192 861445 895720 927710 950560 1023680 1034488 1060240 1164436 1182272 1206023 1254008 1293110 1298794 1330784 1378312 1426880 1433152 1455545 1477840 1484336 1567510 1591520 1663480 1722890 1791440 1855420 1901120 2037763 2068976 2120480 2328872 2412046 2508016 2586220 2597588 2661568 2756624 2911090 2955680 2968672 3135020 3183040 3246985 3326960 3445780 3582880 3710840 4075526 4137952 4240960 4545779 4657744 4824092 5016032 5172440 5195176 5513248 5822180 5911360 5937344 6030115 6270040 6493970 6653920 6891560 7165760 7421680 8151052 8275904 8442161 9091558 9315488 9648184 10032064 10188815 10344880 10390352 11026496 11644360 12060230 12540080 12987940 13307840 13783120 14843360 16302104 16884322 18183116 18630976 19296368 20377630 20689760 20780704 22728895 23288720 24120460 25080160 25975880 27566240 29686720 32604208 33768644 36366232 38592736 40755260 41379520 41561408 42210805 45457790 46577440 48240920 50160320 51951760 55132480 59095127 65208416 67537288 72732464 77185472 81510520 84421610 90915580 93154880 96481840 103903520 118190254 130416832 135074576 145464928 163021040 168843220 181831160 192963680 207807040 236380508 270149152 290929856 295475635 326042080 337686440 363662320 385927360 472761016 540298304 590951270 652084160 675372880 727324640 945522032 1181902540 1350745760 1454649280 1891044064 2363805080 2701491520 3782088128 4727610160 9455220320 18910440640
• Sum of all divisors σ(n): 58631328000
• Sum of proper divisors (its aliquot sum) s(n): 39720887360
• 18910440640 is an abundant number, because the sum of its proper divisors (39720887360) is greater than itself. Its abundance is 20810446720

Bases of 18910440640

• Binary: 10001100111001001100110110011000000₂
• Hexadecimal: 0x467266CC0
• Base-36: 8OQSDDS

Squares and roots of 18910440640

• 18910440640 squared (18910440640²) is 357604765198963609600
• 18910440640 cubed (18910440640³) is 6762463684876139128860934144000
• The square root of 18910440640 is 137515.2378465747
• The cube root of 18910440640 is 2664.2024062619

Scales and comparisons

• 18,910,440,640 seconds is equal to 601 years, 15 weeks, 1 day, 20 hours, 10 minutes, 40 seconds.
• To count from 1 to 18,910,440,640 would take you about one thousand, two hundred 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 18910440640 cubic inches would be around 222 feet tall.

Recreational maths with 18910440640

• 18910440640 backwards is 04604401981
• The number of decimal digits it has is: 11
• The sum of 18910440640's digits is 37
• More coming soon!