1991880321531904

Names of 1991880321531904

• Cardinal: 1991880321531904 can be written as One quadrillion, nine hundred ninety-one trillion, eight hundred eighty billion, three hundred twenty-one million, five hundred thirty-one thousand, nine hundred four.

Scientific notation

• Scientific notation: 1.991880321531904 × 10¹⁵

Factors of 1991880321531904

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 29
• Sum of prime factors: 155

Divisors of 1991880321531904

• Number of divisors d(n): 450
• Complete list of divisors:
  1 2 4 8 16 19 31 32 38 62 64 76 103 124 128 152 206 248 256 304 361 412 496 512 589 608 722 824 992 1024 1178 1216 1444 1648 1957 1984 2048 2356 2432 2888 3193 3296 3914 3968 4096 4712 4864 5776 6386 6592 7828 7936 8192 9424 9728 10609 11191 11552 12772 13184 15656 15872 16384 18848 19456 21218 22382 23104 25544 26368 31312 31744 32768 37183 37696 38912 42436 44764 46208 51088 52736 60667 62624 63488 65536 74366 75392 77824 84872 89528 92416 102176 105472 121334 125248 126976 131072 148732 150784 155648 169744 179056 184832 201571 204352 210944 242668 250496 253952 262144 297464 301568 311296 328879 339488 358112 369664 403142 408704 421888 485336 500992 507904 524288 594928 603136 622592 657758 678976 716224 739328 806284 817408 843776 970672 1001984 1015808 1048576 1152673 1189856 1206272 1245184 1315516 1357952 1432448 1478656 1612568 1634816 1687552 1941344 2003968 2031616 2097152 2305346 2379712 2412544 2490368 2631032 2715904 2864896 2957312 3225136 3269632 3375104 3829849 3882688 4007936 4063232 4194304 4610692 4759424 4825088 4980736 5262064 5431808 5729792 5914624 6248701 6450272 6539264 6750208 7659698 7765376 8015872 8126464 8388608 9221384 9518848 9650176 9961472 10524128 10863616 11459584 11829248 12497402 12900544 13078528 13500416 15319396 15530752 16031744 16252928 16777216 18442768 19037696 19300352 19922944 21048256 21727232 22919168 23658496 24994804 25801088 26157056 27000832 30638792 31061504 32063488 32505856 36885536 38075392 38600704 39845888 42096512 43454464 45838336 47316992 49989608 51602176 52314112 54001664 61277584 62123008 64126976 65011712 73771072 76150784 77201408 79691776 84193024 86908928 91676672 94633984 99979216 103204352 104628224 108003328 118725319 122555168 124246016 128253952 130023424 147542144 152301568 154402816 159383552 168386048 173817856 183353344 189267968 199958432 206408704 209256448 216006656 237450638 245110336 248492032 256507904 260046848 295084288 304603136 308805632 318767104 336772096 347635712 366706688 378535936 399916864 412817408 418512896 432013312 474901276 490220672 496984064 513015808 520093696 590168576 609206272 617611264 673544192 695271424 733413376 757071872 799833728 825634816 837025792 864026624 949802552 980441344 993968128 1026031616 1180337152 1218412544 1235222528 1347088384 1390542848 1466826752 1514143744 1599667456 1651269632 1674051584 1728053248 1899605104 1960882688 1987936256 2052063232 2360674304 2436825088 2470445056 2694176768 2781085696 2933653504 3028287488 3199334912 3302539264 3348103168 3799210208 3921765376 3975872512 4104126464 4721348608 4873650176 4940890112 5388353536 5562171392 5867307008 6056574976 6398669824 6605078528 6696206336 7598420416 7843530752 7951745024 8208252928 9442697216 9747300352 9881780224 10776707072 11124342784 11734614016 12797339648 13210157056 13392412672 15196840832 15687061504 15903490048 16416505856 18885394432 19494600704 21553414144 22248685568 23469228032 25594679296 26420314112 26784825344 30393681664 31374123008 31806980096 32833011712 37770788864 38989201408 43106828288 44497371136 46938456064 51189358592 52840628224 53569650688 60787363328 62748246016 63613960192 75541577728 77978402816 86213656576 88994742272 93876912128 102378717184 105681256448 121574726656 125496492032 127227920384 151083155456 155956805632 172427313152 177989484544 187753824256 204757434368 211362512896 243149453312 250992984064 254455840768 302166310912 311913611264 344854626304 409514868736 422725025792 486298906624 501985968128 508911681536 604332621824 623827222528 689709252608 819029737472 845450051584 972597813248 1003971936256 1017823363072 1208665243648 1379418505216 1638059474944 1690900103168 1945195626496 2007943872512 2417330487296 2758837010432 3276118949888 3381800206336 3890391252992 4015887745024 4834660974592 5517674020864 6552237899776 7780782505984 8031775490048 9669321949184 13104475799552 15561565011968 16063550980096 19338643898368 26208951599104 31123130023936 32127101960192 52417903198208 62246260047872 64254203920384 104835806396416 124492520095744 248985040191488 497970080382976 995940160765952 1991880321531904
• Sum of all divisors σ(n): 4382641406542176
• Sum of proper divisors (its aliquot sum) s(n): 2390761085010272
• 1991880321531904 is an abundant number, because the sum of its proper divisors (2390761085010272) is greater than itself. Its abundance is 398880763478368

Bases of 1991880321531904

• Binary: 111000100111001101011000111000000000000000000000000₂
• Hexadecimal: 0x7139AC7000000
• Base-36: JM296QM41S

Squares and roots of 1991880321531904

• 1991880321531904 squared (1991880321531904²) is 3967587215306041261805289865216
• 1991880321531904 cubed (1991880321531904³) is 7902958898129669091974110387543773714803851264
• The square root of 1991880321531904 is 44630486.4586070135
• The cube root of 1991880321531904 is 125821.3711663155

Scales and comparisons

• 1,991,880,321,531,904 seconds is equal to 63,335,632 years, 48 weeks, 4 days, 2 hours, 25 minutes, 4 seconds.
• To count from 1 to 1,991,880,321,531,904 would take you about one hundred ninety million, six thousand, eight hundred ninety-eight 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 1991880321531904 cubic inches would be around 10485.1 feet tall.

Recreational maths with 1991880321531904

• 1991880321531904 backwards is 4091351230881991
• 1991880321531904 is a Harshad number.
• The number of decimal digits it has is: 16
• The sum of 1991880321531904's digits is 64
• More coming soon!