18021238389
18,021,238,389 is an odd composite number composed of seven prime numbers multiplied together.
18021238389 is an odd composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 18021238389:
32 × 7 × 11 × 19 × 37 × 71 × 521
(3 × 3 × 7 × 11 × 19 × 37 × 71 × 521)See below for interesting mathematical facts about the number 18021238389 from the Numbermatics database.
Names of 18021238389
- Cardinal: 18021238389 can be written as Eighteen billion, twenty-one million, two hundred thirty-eight thousand, three hundred eighty-nine.
Scientific notation
- Scientific notation: 1.8021238389 × 1010
Factors of 18021238389
Divisors of 18021238389
- Number of divisors d(n): 192
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Complete list of divisors:
1 3 7 9 11 19 21 33 37 57 63 71 77 99 111 133 171 209 213 231 259 333 399 407 497 521 627 639 693 703 777 781 1197 1221 1349 1463 1491 1563 1881 2109 2331 2343 2627 2849 3647 3663 4047 4389 4473 4689 4921 5467 5731 6327 7029 7733 7881 8547 9443 9899 10941 12141 13167 14763 14839 16401 17193 18389 19277 23199 23643 25641 28329 28897 29697 32823 36991 40117 44289 44517 49203 49913 51579 54131 55167 57831 69293 69597 84987 86691 89091 103873 108889 110973 120351 133551 134939 149739 162393 165501 173493 202279 207879 212047 258937 260073 311619 326667 332919 349391 361053 366263 404817 406901 449217 487179 549043 606837 623637 636141 702829 762223 776811 934857 980001 1048173 1098789 1214451 1220703 1368667 1484329 1647129 1820511 1908423 2108487 2286669 2330433 2563841 2848307 3144519 3296367 3662109 3843301 4028893 4106001 4452987 4919803 4941387 6325461 6860007 7691523 7731119 8544921 9580669 11529903 12086679 12318003 13358961 14759409 15055337 23074569 23193357 25634763 26004673 28202251 28742007 34589709 36260037 44278227 45166011 54117833 69580071 78014019 84606753 86226021 105387359 135498033 162353499 182032711 234042057 253820259 286051403 316162077 487060497 546098133 858154209 948486231 1638294399 2002359821 2574462627 6007079463 18021238389
- Sum of all divisors σ(n): 35647672320
- Sum of proper divisors (its aliquot sum) s(n): 17626433931
- 18021238389 is a deficient number, because the sum of its proper divisors (17626433931) is less than itself. Its deficiency is 394804458
Bases of 18021238389
- Binary: 100001100100010011001000110011101012
- Hexadecimal: 0x432264675
- Base-36: 8A1DOJ9
Squares and roots of 18021238389
- 18021238389 squared (180212383892) is 324765033073167315321
- 18021238389 cubed (180212383893) is 5852668081423017468682873057869
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The
square root of 18021238389 is 134243.2061185965 -
The
cube root of 18021238389 is 2621.7717358411
Scales and comparisons
How big is 18021238389?- 18,021,238,389 seconds is equal to 573 years, 1 week, 3 hours, 33 minutes, 9 seconds.
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To count from 1 to 18,021,238,389 would take you about one thousand, one hundred forty-six 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 18021238389 cubic inches would be around 218.5 feet tall.
Recreational maths with 18021238389
- 18021238389 backwards is 98383212081
- The number of decimal digits it has is: 11
- The sum of 18021238389's digits is 45
- More coming soon!
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