18161491712
18,161,491,712 is an even composite number composed of four prime numbers multiplied together.
18161491712 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of two hundred sixteen divisors.
Prime factorization of 18161491712:
28 × 72 × 133 × 659
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 7 × 13 × 13 × 13 × 659)See below for interesting mathematical facts about the number 18161491712 from the Numbermatics database.
Names of 18161491712
- Cardinal: 18161491712 can be written as Eighteen billion, one hundred sixty-one million, four hundred ninety-one thousand, seven hundred twelve.
Scientific notation
- Scientific notation: 1.8161491712 × 1010
Factors of 18161491712
Divisors of 18161491712
- Number of divisors d(n): 216
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Complete list of divisors:
1 2 4 7 8 13 14 16 26 28 32 49 52 56 64 91 98 104 112 128 169 182 196 208 224 256 338 364 392 416 448 637 659 676 728 784 832 896 1183 1274 1318 1352 1456 1568 1664 1792 2197 2366 2548 2636 2704 2912 3136 3328 4394 4613 4732 5096 5272 5408 5824 6272 8281 8567 8788 9226 9464 10192 10544 10816 11648 12544 15379 16562 17134 17576 18452 18928 20384 21088 21632 23296 30758 32291 33124 34268 35152 36904 37856 40768 42176 43264 59969 61516 64582 66248 68536 70304 73808 75712 81536 84352 107653 111371 119938 123032 129164 132496 137072 140608 147616 151424 163072 168704 215306 222742 239876 246064 258328 264992 274144 281216 295232 302848 419783 430612 445484 479752 492128 516656 529984 548288 562432 590464 779597 839566 861224 890968 959504 984256 1033312 1059968 1096576 1180928 1447823 1559194 1679132 1722448 1781936 1919008 1968512 2066624 2119936 2193152 2895646 3118388 3358264 3444896 3563872 3838016 3937024 4133248 5457179 5791292 6236776 6716528 6889792 7127744 7676032 8266496 10134761 10914358 11582584 12473552 13433056 13779584 14255488 15352064 20269522 21828716 23165168 24947104 26866112 27559168 28510976 40539044 43657432 46330336 49894208 53732224 70943327 81078088 87314864 92660672 99788416 107464448 141886654 162156176 174629728 185321344 199576832 283773308 324312352 349259456 370642688 567546616 648624704 698518912 1135093232 1297249408 1397037824 2270186464 2594498816 4540372928 9080745856 18161491712
- Sum of all divisors σ(n): 45752691600
- Sum of proper divisors (its aliquot sum) s(n): 27591199888
- 18161491712 is an abundant number, because the sum of its proper divisors (27591199888) is greater than itself. Its abundance is 9429708176
Bases of 18161491712
- Binary: 100001110101000001001011111000000002
- Hexadecimal: 0x43A825F00
- Base-36: 8CCVSOW
Squares and roots of 18161491712
- 18161491712 squared (181614917122) is 329839781205044690944
- 18161491712 cubed (181614917123) is 5990382452643312527169057456128
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The
square root of 18161491712 is 134764.5788477077 -
The
cube root of 18161491712 is 2628.5556272703
Scales and comparisons
How big is 18161491712?- 18,161,491,712 seconds is equal to 577 years, 24 weeks, 6 days, 10 hours, 48 minutes, 32 seconds.
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To count from 1 to 18,161,491,712 would take you about one thousand, one hundred fifty-four 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 18161491712 cubic inches would be around 219 feet tall.
Recreational maths with 18161491712
- 18161491712 backwards is 21719416181
- The number of decimal digits it has is: 11
- The sum of 18161491712's digits is 41
- More coming soon!
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