18681940992

Names of 18681940992

• Cardinal: 18681940992 can be written as Eighteen billion, six hundred eighty-one million, nine hundred forty thousand, nine hundred ninety-two.

Scientific notation

• Scientific notation: 1.8681940992 × 10¹⁰

Factors of 18681940992

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 95

Divisors of 18681940992

• Number of divisors d(n): 528
• Complete list of divisors:
  1 2 3 4 6 8 11 12 13 16 22 23 24 26 32 33 39 43 44 46 48 52 64 66 69 78 86 88 92 96 104 128 129 132 138 143 156 172 176 184 192 208 253 256 258 264 276 286 299 312 344 352 368 384 416 429 473 506 512 516 528 552 559 572 598 624 688 704 736 759 768 832 858 897 946 989 1012 1024 1032 1056 1104 1118 1144 1196 1248 1376 1408 1419 1472 1518 1536 1664 1677 1716 1794 1849 1892 1978 2024 2064 2112 2208 2236 2288 2392 2496 2752 2816 2838 2944 2967 3036 3072 3289 3328 3354 3432 3588 3698 3784 3956 4048 4128 4224 4416 4472 4576 4784 4992 5504 5547 5632 5676 5888 5934 6072 6149 6578 6656 6708 6864 7176 7396 7568 7912 8096 8256 8448 8832 8944 9152 9568 9867 9984 10879 11008 11094 11264 11352 11776 11868 12144 12298 12857 13156 13312 13416 13728 14352 14792 15136 15824 16192 16512 16896 17664 17888 18304 18447 19136 19734 19968 20339 21758 22016 22188 22704 23552 23736 24037 24288 24596 25714 26312 26832 27456 28704 29584 30272 31648 32384 32637 33024 33792 35328 35776 36608 36894 38272 38571 39468 39936 40678 42527 43516 44032 44376 45408 47472 48074 48576 49192 51428 52624 53664 54912 57408 59168 60544 61017 63296 64768 65274 66048 70656 71552 72111 73216 73788 76544 77142 78936 81356 85054 87032 88752 90816 94944 96148 97152 98384 102856 105248 107328 109824 114816 118336 121088 122034 126592 127581 129536 130548 132096 141427 143104 144222 146432 147576 153088 154284 157872 162712 170108 174064 177504 181632 189888 192296 194304 196768 205712 210496 214656 219648 229632 236672 242176 244068 253184 255162 259072 261096 264407 282854 286208 288444 295152 306176 308568 315744 325424 340216 348128 355008 363264 379776 384592 388608 393536 411424 420992 424281 429312 439296 459264 467797 473344 484352 488136 506368 510324 522192 528814 552851 565708 572416 576888 590304 617136 631488 650848 680432 696256 710016 726528 759552 769184 777216 787072 793221 822848 841984 848562 858624 918528 935594 946688 976272 1012736 1020648 1044384 1057628 1105702 1131416 1153776 1180608 1234272 1262976 1301696 1360864 1392512 1403391 1420032 1453056 1519104 1538368 1574144 1586442 1645696 1658553 1683968 1697124 1717248 1871188 1893376 1952544 2041296 2088768 2115256 2211404 2262832 2307552 2361216 2468544 2525952 2603392 2721728 2785024 2806782 2840064 3038208 3076736 3148288 3172884 3291392 3317106 3367936 3394248 3742376 3905088 4082592 4177536 4230512 4422808 4525664 4615104 4722432 4937088 5051904 5206784 5443456 5570048 5613564 5680128 6081361 6153472 6296576 6345768 6582784 6634212 6788496 7484752 7810176 8165184 8355072 8461024 8845616 9051328 9230208 9444864 9874176 10103808 10413568 10886912 11140096 11227128 12162722 12306944 12691536 13165568 13268424 13576992 14969504 15620352 16330368 16710144 16922048 17691232 18102656 18244083 18460416 18889728 19748352 20827136 21773824 22454256 24325444 24613888 25383072 26536848 27153984 29939008 31240704 32660736 33420288 33844096 35382464 36205312 36488166 36920832 39496704 43547648 44908512 48650888 50766144 53073696 54307968 59878016 62481408 65321472 67688192 70764928 72410624 72976332 73841664 89817024 97301776 101532288 106147392 108615936 119756032 130642944 135376384 141529856 144821248 145952664 179634048 194603552 203064576 212294784 217231872 239512064 270752768 283059712 291905328 359268096 389207104 406129152 424589568 434463744 479024128 566119424 583810656 718536192 778414208 812258304 849179136 1167621312 1437072384 1556828416 1698358272 2335242624 3113656832 4670485248 6227313664 9340970496 18681940992
• Sum of all divisors σ(n): 62495532288
• Sum of proper divisors (its aliquot sum) s(n): 43813591296
• 18681940992 is an abundant number, because the sum of its proper divisors (43813591296) is greater than itself. Its abundance is 25131650304

Bases of 18681940992

• Binary: 10001011001100001111100110000000000₂
• Hexadecimal: 0x45987CC00
• Base-36: 8KYQTXC

Squares and roots of 18681940992

• 18681940992 squared (18681940992²) is 349014919228569944064
• 18681940992 cubed (18681940992³) is 6520276126355789855548388671488
• The square root of 18681940992 is 136681.8970895561
• The cube root of 18681940992 is 2653.4281486505

Scales and comparisons

• 18,681,940,992 seconds is equal to 594 years, 1 week, 3 days, 4 hours, 3 minutes, 12 seconds.
• To count from 1 to 18,681,940,992 would take you about one thousand, one hundred eighty-eight 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 18681940992 cubic inches would be around 221.1 feet tall.

Recreational maths with 18681940992

• 18681940992 backwards is 29904918681
• The number of decimal digits it has is: 11
• The sum of 18681940992's digits is 57
• More coming soon!