18689128171840

Names of 18689128171840

• Cardinal: 18689128171840 can be written as Eighteen trillion, six hundred eighty-nine billion, one hundred twenty-eight million, one hundred seventy-one thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.868912817184 × 10¹³

Factors of 18689128171840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 8956

Divisors of 18689128171840

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 23 28 32 35 40 46 56 64 67 70 80 92 112 115 134 140 160 161 184 224 230 268 280 320 322 335 368 448 460 469 536 560 644 661 670 736 805 920 938 1072 1120 1288 1322 1340 1472 1541 1610 1840 1876 2144 2240 2345 2576 2644 2680 3082 3220 3305 3680 3752 4288 4627 4690 5152 5288 5360 6164 6440 6610 7360 7504 7705 8191 9254 9380 10304 10576 10720 10787 12328 12880 13220 15008 15203 15410 16382 18508 18760 21152 21440 21574 23135 24656 25760 26440 30016 30406 30820 32764 37016 37520 40955 42304 43148 44287 46270 49312 51520 52880 53935 57337 60812 61640 65528 74032 75040 76015 81910 86296 88574 92540 98624 105760 106421 107870 114674 121624 123280 131056 148064 150080 152030 163820 172592 177148 185080 188393 211520 212842 215740 221435 229348 243248 246560 262112 286685 296128 304060 310009 327640 345184 354296 370160 376786 425684 431480 442870 458696 486496 493120 524224 532105 548797 573370 608120 620018 655280 690368 708592 740320 753572 851368 862960 885740 917392 941965 972992 1018601 1064210 1097594 1146740 1216240 1240036 1310560 1318751 1417184 1480640 1507144 1550045 1702736 1725920 1771480 1834784 1883930 2037202 2128420 2195188 2293480 2432480 2480072 2621120 2637502 2743985 2834368 3014288 3100090 3405472 3451840 3542960 3669568 3767860 3841579 4074404 4256840 4390376 4586960 4864960 4960144 5093005 5275004 5414251 5487970 6028576 6200180 6593755 6810944 7085920 7130207 7535720 7683158 8148808 8513680 8780752 9173920 9920288 10186010 10550008 10828502 10975940 12057152 12400360 12622331 13187510 14171840 14260414 15071440 15366316 16297616 17027360 17561504 18347840 19207895 19840576 20372020 21100016 21657004 21951880 24800720 25244662 26375020 27071255 28520828 30142880 30732632 32595232 34054720 35123008 35651035 37899757 38415790 40744040 42200032 43314008 43903760 49601440 50489324 52750040 54142510 57041656 60285760 61465264 63111655 65190464 71302070 75799514 76831580 81488080 84400064 86628016 87807520 88356317 99202880 100978648 105500080 108285020 114083312 122930528 124527773 126223310 142604140 151599028 153663160 162976160 173256032 175615040 176712634 189498785 201957296 211000160 216570040 228166624 245861056 249055546 252446620 285208280 303198056 307326320 325952320 346512064 353425268 362754817 378997570 403914592 422000320 433140080 441781585 456333248 498111092 504893240 570416560 606396112 614652640 622638865 706850536 725509634 757995140 807829184 866280160 871694411 883563170 996222184 1009786480 1140833120 1212792224 1229305280 1245277730 1413701072 1451019268 1515990280 1732560320 1743388822 1767126340 1813774085 1992444368 2019572960 2281666240 2425584448 2490555460 2539283719 2827402144 2902038536 3031980560 3486777644 3534252680 3627548170 3984888736 4039145920 4358472055 4981110920 5078567438 5654804288 5804077072 6063961120 6973555288 7068505360 7255096340 7969777472 8343360791 8716944110 9962221840 10157134876 11608154144 12127922240 12696418595 13947110576 14137010720 14510192680 16686721582 17433888220 19924443680 20314269752 23216308288 25392837190 27894221152 28274021440 29020385360 33373443164 34867776440 39848887360 40628539504 41716803955 50785674380 55788442304 58040770720 58403525537 66746886328 69735552880 81257079008 83433607910 101571348760 116081541440 116807051074 133493772656 139471105760 162514158016 166867215820 203142697520 233614102148 266987545312 278942211520 292017627685 333734431640 406285395040 467228204296 533975090624 584035255370 667468863280 812570790080 934456408592 1168070510740 1334937726560 1868912817184 2336141021480 2669875453120 3737825634368 4672282042960 9344564085920 18689128171840
• Sum of all divisors σ(n): 53952682917888
• Sum of proper divisors (its aliquot sum) s(n): 35263554746048
• 18689128171840 is an abundant number, because the sum of its proper divisors (35263554746048) is greater than itself. Its abundance is 16574426574208

Bases of 18689128171840

• Binary: 100001111111101100110110110001000100101000000₂
• Hexadecimal: 0x10FF66D88940
• Base-36: 6MHO0DHDS

Squares and roots of 18689128171840

• 18689128171840 squared (18689128171840²) is 349283511823463540568985600
• 18689128171840 cubed (18689128171840³) is 6527804320779102184770939519931285504000
• The square root of 18689128171840 is 4323092.4315633133
• The cube root of 18689128171840 is 26537.6837418803

Scales and comparisons

• 18,689,128,171,840 seconds is equal to 594,256 years, 24 weeks, 1 day, 20 hours, 10 minutes, 40 seconds.
• To count from 1 to 18,689,128,171,840 would take you about one million, four hundred eighty-five thousand, six hundred forty-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 18689128171840 cubic inches would be around 2211.5 feet tall.

Recreational maths with 18689128171840

• 18689128171840 backwards is 04817182198681
• 18689128171840 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 18689128171840's digits is 64
• More coming soon!