18138506820
18,138,506,820 is an even composite number composed of seven prime numbers multiplied together.
18138506820 is an even 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 18138506820:
22 × 3 × 5 × 7 × 43 × 137 × 7331
(2 × 2 × 3 × 5 × 7 × 43 × 137 × 7331)See below for interesting mathematical facts about the number 18138506820 from the Numbermatics database.
Names of 18138506820
- Cardinal: 18138506820 can be written as Eighteen billion, one hundred thirty-eight million, five hundred six thousand, eight hundred twenty.
Scientific notation
- Scientific notation: 1.813850682 × 1010
Factors of 18138506820
Divisors of 18138506820
- Number of divisors d(n): 192
-
Complete list of divisors:
1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 43 60 70 84 86 105 129 137 140 172 210 215 258 274 301 411 420 430 516 548 602 645 685 822 860 903 959 1204 1290 1370 1505 1644 1806 1918 2055 2580 2740 2877 3010 3612 3836 4110 4515 4795 5754 5891 6020 7331 8220 9030 9590 11508 11782 14385 14662 17673 18060 19180 21993 23564 28770 29324 29455 35346 36655 41237 43986 51317 57540 58910 70692 73310 82474 87972 88365 102634 109965 117820 123711 146620 153951 164948 176730 205268 206185 219930 247422 256585 307902 315233 353460 412370 439860 494844 513170 615804 618555 630466 769755 824740 945699 1004347 1026340 1237110 1260932 1539510 1576165 1891398 2008694 2206631 2474220 3013041 3079020 3152330 3782796 4017388 4413262 4728495 5021735 6026082 6304660 6619893 7030429 8826524 9456990 10043470 11033155 12052164 13239786 14060858 15065205 18913980 20086940 21091287 22066310 26479572 28121716 30130410 33099465 35152145 42182574 43186921 44132620 60260820 66198930 70304290 84365148 86373842 105456435 129560763 132397860 140608580 172747684 210912870 215934605 259121526 302308447 421825740 431869210 518243052 604616894 647803815 863738420 906925341 1209233788 1295607630 1511542235 1813850682 2591215260 3023084470 3627701364 4534626705 6046168940 9069253410 18138506820
- Sum of all divisors σ(n): 59834750976
- Sum of proper divisors (its aliquot sum) s(n): 41696244156
- 18138506820 is an abundant number, because the sum of its proper divisors (41696244156) is greater than itself. Its abundance is 23557737336
Bases of 18138506820
- Binary: 100001110010010001110100110010001002
- Hexadecimal: 0x43923A644
- Base-36: 8BZ75FO
Squares and roots of 18138506820
- 18138506820 squared (181385068202) is 329005429659186512400
- 18138506820 cubed (181385068203) is 5967667229690184830819414568000
-
The
square root of 18138506820 is 134679.2739065667 -
The
cube root of 18138506820 is 2627.4462732273
Scales and comparisons
How big is 18138506820?- 18,138,506,820 seconds is equal to 576 years, 38 weeks, 6 days, 10 hours, 7 minutes.
-
To count from 1 to 18,138,506,820 would take you about one thousand, one hundred fifty-three 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 18138506820 cubic inches would be around 219 feet tall.
Recreational maths with 18138506820
- 18138506820 backwards is 02860583181
- 18138506820 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 18138506820's digits is 42
- More coming soon!
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"Number 18138506820 - Facts about the integer". Numbermatics.com. 2024. Web. 11 June 2024.
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The information we have on file for 18138506820 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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