18991489920
18,991,489,920 is an even composite number composed of six prime numbers multiplied together.
18991489920 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 18991489920:
27 × 3 × 5 × 132 × 107 × 547
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 13 × 13 × 107 × 547)See below for interesting mathematical facts about the number 18991489920 from the Numbermatics database.
Names of 18991489920
- Cardinal: 18991489920 can be written as Eighteen billion, nine hundred ninety-one million, four hundred eighty-nine thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 1.899148992 × 1010
Factors of 18991489920
Divisors of 18991489920
- Number of divisors d(n): 384
-
Complete list of divisors:
1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 32 39 40 48 52 60 64 65 78 80 96 104 107 120 128 130 156 160 169 192 195 208 214 240 260 312 320 321 338 384 390 416 428 480 507 520 535 547 624 640 642 676 780 832 845 856 960 1014 1040 1070 1094 1248 1284 1352 1391 1560 1605 1641 1664 1690 1712 1920 2028 2080 2140 2188 2496 2535 2568 2704 2735 2782 3120 3210 3282 3380 3424 4056 4160 4173 4280 4376 4992 5070 5136 5408 5470 5564 6240 6420 6564 6760 6848 6955 7111 8112 8205 8320 8346 8560 8752 10140 10272 10816 10940 11128 12480 12840 13128 13520 13696 13910 14222 16224 16410 16692 17120 17504 18083 20280 20544 20865 21333 21632 21880 22256 24960 25680 26256 27040 27820 28444 32448 32820 33384 34240 35008 35555 36166 40560 41088 41730 42666 43760 44512 51360 52512 54080 54249 55640 56888 58529 64896 65640 66768 68480 70016 71110 72332 81120 83460 85332 87520 89024 90415 92443 102720 105024 106665 108160 108498 111280 113776 117058 131280 133536 142220 144664 162240 166920 170664 175040 175587 178048 180830 184886 205440 210048 213330 216996 222560 227552 234116 262560 267072 271245 277329 284440 289328 292645 324480 333840 341328 350080 351174 361660 369772 426660 433992 445120 455104 462215 468232 525120 534144 542490 554658 568880 578656 585290 667680 682656 702348 723320 739544 760877 853320 867984 877935 890240 910208 924430 936464 1050240 1084980 1109316 1137760 1157312 1170580 1335360 1365312 1386645 1404696 1446640 1479088 1521754 1706640 1735968 1755870 1848860 1872928 2169960 2218632 2275520 2282631 2314624 2341160 2670720 2730624 2773290 2809392 2893280 2958176 3043508 3413280 3471936 3511740 3697720 3745856 3804385 4339920 4437264 4551040 4565262 4682320 5546580 5618784 5786560 5916352 6087016 6826560 6943872 7023480 7395440 7491712 7608770 8679840 8874528 9130524 9364640 9891401 11093160 11237568 11413155 11573120 11832704 12174032 13653120 14046960 14790880 15217540 17359680 17749056 18261048 18729280 19782802 22186320 22475136 22826310 24348064 28093920 29581760 29674203 30435080 34719360 35498112 36522096 37458560 39565604 44372640 45652620 48696128 49457005 56187840 59163520 59348406 60870160 73044192 79131208 88745280 91305240 97392256 98914010 112375680 118696812 121740320 146088384 148371015 158262416 177490560 182610480 197828020 237393624 243480640 292176768 296742030 316524832 365220960 395656040 474787248 486961280 593484060 633049664 730441920 791312080 949574496 1186968120 1266099328 1460883840 1582624160 1899148992 2373936240 3165248320 3798297984 4747872480 6330496640 9495744960 18991489920
- Sum of all divisors σ(n): 66283712640
- Sum of proper divisors (its aliquot sum) s(n): 47292222720
- 18991489920 is an abundant number, because the sum of its proper divisors (47292222720) is greater than itself. Its abundance is 28300732800
Bases of 18991489920
- Binary: 100011010111111101100100011100000002
- Hexadecimal: 0x46BFB2380
- Base-36: 8Q31JEO
Squares and roots of 18991489920
- 18991489920 squared (189914899202) is 360676689381461606400
- 18991489920 cubed (189914899203) is 6849787710766999132812607488000
-
The
square root of 18991489920 is 137809.6147589129 -
The
cube root of 18991489920 is 2668.0031977975
Scales and comparisons
How big is 18991489920?- 18,991,489,920 seconds is equal to 603 years, 45 weeks, 1 day, 21 hours, 52 minutes.
-
To count from 1 to 18,991,489,920 would take you about one thousand, two hundred seven 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 18991489920 cubic inches would be around 222.3 feet tall.
Recreational maths with 18991489920
- 18991489920 backwards is 02998419981
- 18991489920 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 18991489920's digits is 60
- More coming soon!
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The information we have on file for 18991489920 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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