18121356864
18,121,356,864 is an even composite number composed of six prime numbers multiplied together.
18121356864 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred thirty-six divisors.
Prime factorization of 18121356864:
26 × 32 × 13 × 61 × 97 × 409
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 13 × 61 × 97 × 409)See below for interesting mathematical facts about the number 18121356864 from the Numbermatics database.
Names of 18121356864
- Cardinal: 18121356864 can be written as Eighteen billion, one hundred twenty-one million, three hundred fifty-six thousand, eight hundred sixty-four.
Scientific notation
- Scientific notation: 1.8121356864 × 1010
Factors of 18121356864
Divisors of 18121356864
- Number of divisors d(n): 336
-
Complete list of divisors:
1 2 3 4 6 8 9 12 13 16 18 24 26 32 36 39 48 52 61 64 72 78 96 97 104 117 122 144 156 183 192 194 208 234 244 288 291 312 366 388 409 416 468 488 549 576 582 624 732 776 793 818 832 873 936 976 1098 1164 1227 1248 1261 1464 1552 1586 1636 1746 1872 1952 2196 2328 2379 2454 2496 2522 2928 3104 3172 3272 3492 3681 3744 3783 3904 4392 4656 4758 4908 5044 5317 5856 5917 6208 6344 6544 6984 7137 7362 7488 7566 8784 9312 9516 9816 10088 10634 11349 11712 11834 12688 13088 13968 14274 14724 15132 15951 17568 17751 18624 19032 19632 20176 21268 22698 23668 24949 25376 26176 27936 28548 29448 30264 31902 35136 35502 38064 39264 39673 40352 42536 45396 47336 47853 49898 50752 53253 55872 57096 58896 60528 63804 71004 74847 76128 76921 78528 79346 80704 85072 90792 94672 95706 99796 106506 114192 117792 119019 121056 127608 142008 149694 152256 153842 158692 170144 181584 189344 191412 199592 213012 224541 228384 230763 235584 238038 242112 255216 284016 299388 307684 317384 324337 340288 357057 363168 378688 382824 399184 426024 449082 456768 461526 476076 510432 515749 568032 598776 615368 634768 648674 692289 714114 726336 765648 798368 852048 898164 923052 952152 973011 1020864 1031498 1136064 1197552 1230736 1269536 1297348 1384578 1428228 1531296 1547247 1596736 1704096 1796328 1846104 1904304 1946022 2062996 2395104 2420053 2461472 2539072 2594696 2769156 2856456 2919033 3062592 3094494 3408192 3592656 3692208 3808608 3892044 4125992 4641741 4790208 4840106 4922944 5189392 5538312 5712912 5838066 6188988 7185312 7260159 7384416 7617216 7784088 8251984 9283482 9680212 10378784 11076624 11425824 11676132 12377976 14370624 14520318 14768832 15568176 16503968 18566964 19360424 20757568 21780477 22153248 22851648 23352264 24755952 29040636 31136352 31460689 33007936 37133928 38720848 43560954 44306496 46704528 49511904 58081272 62272704 62921378 74267856 77441696 87121908 93409056 94382067 99023808 116162544 125842756 148535712 154883392 174243816 186818112 188764134 232325088 251685512 283146201 297071424 348487632 377528268 464650176 503371024 566292402 696975264 755056536 1006742048 1132584804 1393950528 1510113072 2013484096 2265169608 3020226144 4530339216 6040452288 9060678432 18121356864
- Sum of all divisors σ(n): 57580672240
- Sum of proper divisors (its aliquot sum) s(n): 39459315376
- 18121356864 is an abundant number, because the sum of its proper divisors (39459315376) is greater than itself. Its abundance is 21337958512
Bases of 18121356864
- Binary: 100001110000001110111110110010000002
- Hexadecimal: 0x4381DF640
- Base-36: 8BOZKG0
Squares and roots of 18121356864
- 18121356864 squared (181213568642) is 328383574592439914496
- 18121356864 cubed (181213568643) is 5950755943465567047059662700544
-
The
square root of 18121356864 is 134615.5892309653 -
The
cube root of 18121356864 is 2626.6179287283
Scales and comparisons
How big is 18121356864?- 18,121,356,864 seconds is equal to 576 years, 10 weeks, 3 days, 22 hours, 14 minutes, 24 seconds.
-
To count from 1 to 18,121,356,864 would take you about one thousand, one hundred fifty-two 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 18121356864 cubic inches would be around 218.9 feet tall.
Recreational maths with 18121356864
- 18121356864 backwards is 46865312181
- The number of decimal digits it has is: 11
- The sum of 18121356864's digits is 45
- More coming soon!
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