18191380643840

Names of 18191380643840

• Cardinal: 18191380643840 can be written as Eighteen trillion, one hundred ninety-one billion, three hundred eighty million, six hundred forty-three thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.819138064384 × 10¹³

Factors of 18191380643840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 24
• Sum of prime factors: 181

Divisors of 18191380643840

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 37 40 64 74 80 128 137 148 160 185 256 274 296 320 370 512 548 592 640 685 740 1024 1096 1184 1280 1369 1370 1480 2048 2192 2368 2560 2738 2740 2960 4096 4384 4736 5069 5120 5476 5480 5920 6845 8192 8768 9472 10138 10240 10952 10960 11840 13690 16384 17536 18944 20276 20480 21904 21920 23680 25345 27380 32768 35072 37888 40552 40960 43808 43840 47360 50653 50690 54760 65536 70144 75776 81104 81920 87616 87680 94720 101306 101380 109520 131072 140288 151552 162208 163840 175232 175360 187553 189440 202612 202760 219040 253265 262144 280576 303104 324416 327680 350464 350720 375106 378880 405224 405520 438080 506530 524288 561152 606208 648832 655360 700928 701440 750212 757760 810448 811040 876160 937765 1013060 1122304 1212416 1297664 1310720 1401856 1402880 1500424 1515520 1620896 1622080 1752320 1875530 2026120 2244608 2424832 2595328 2621440 2803712 2805760 3000848 3031040 3241792 3244160 3504640 3751060 4052240 4489216 4849664 5190656 5607424 5611520 6001696 6062080 6483584 6488320 6939461 7009280 7502120 8104480 8978432 9699328 10381312 11214848 11223040 12003392 12124160 12967168 12976640 13878922 14018560 15004240 16208960 17956864 19398656 20762624 22429696 22446080 24006784 24248320 25934336 25953280 27757844 28037120 30008480 32417920 34697305 35913728 41525248 44859392 44892160 48013568 48496640 51868672 51906560 55515688 56074240 60016960 64835840 69394610 71827456 83050496 89718784 89784320 96027136 96993280 103737344 103813120 111031376 112148480 120033920 129671680 138789220 166100992 179437568 179568640 192054272 207474688 207626240 222062752 224296960 240067840 259343360 277578440 332201984 358875136 359137280 384108544 414949376 415252480 444125504 448593920 480135680 518686720 555156880 664403968 717750272 768217088 829898752 830504960 888251008 897187840 960271360 1037373440 1110313760 1328807936 1536434176 1659797504 1661009920 1776502016 1794375680 1920542720 2074746880 2220627520 2657615872 3072868352 3319595008 3322019840 3553004032 3588751360 3841085440 4149493760 4441255040 6145736704 6639190016 6644039680 7106008064 7682170880 8298987520 8882510080 12291473408 13278380032 13288079360 14212016128 15364341760 16597975040 17765020160 24582946816 26556760064 28424032256 30728683520 33195950080 35530040320 49165893632 56848064512 61457367040 66391900160 71060080640 98331787264 113696129024 122914734080 132783800320 142120161280 227392258048 245829468160 284240322560 454784516096 491658936320 568480645120 909569032192 1136961290240 1819138064384 2273922580480 3638276128768 4547845160960 9095690321920 18191380643840
• Sum of all divisors σ(n): 45199538406000
• Sum of proper divisors (its aliquot sum) s(n): 27008157762160
• 18191380643840 is an abundant number, because the sum of its proper divisors (27008157762160) is greater than itself. Its abundance is 8816777118320

Bases of 18191380643840

• Binary: 100001000101110000010110010000000000000000000₂
• Hexadecimal: 0x108B82C80000
• Base-36: 6G506CIRK

Squares and roots of 18191380643840

• 18191380643840 squared (18191380643840²) is 330926329729076612929945600
• 18191380643840 cubed (18191380643840³) is 6020006829170537847690240257744175104000
• The square root of 18191380643840 is 4265135.4777826225
• The cube root of 18191380643840 is 26299.9680221675

Scales and comparisons

• 18,191,380,643,840 seconds is equal to 578,429 years, 33 weeks, 1 hour, 57 minutes, 20 seconds.
• To count from 1 to 18,191,380,643,840 would take you about one million, four hundred forty-six thousand and seventy-four 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 18191380643840 cubic inches would be around 2191.7 feet tall.

Recreational maths with 18191380643840

• 18191380643840 backwards is 04834608319181
• The number of decimal digits it has is: 14
• The sum of 18191380643840's digits is 56
• More coming soon!