18085981920

Names of 18085981920

• Cardinal: 18085981920 can be written as Eighteen billion, eighty-five million, nine hundred eighty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.808598192 × 10¹⁰

Factors of 18085981920

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 434

Divisors of 18085981920

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 23 24 30 32 40 46 48 60 69 79 80 89 92 96 115 120 138 158 160 178 184 230 233 237 240 267 276 316 345 356 368 395 445 460 466 474 480 534 552 632 690 699 712 736 790 890 920 932 948 1068 1104 1165 1185 1264 1335 1380 1398 1424 1580 1780 1817 1840 1864 1896 2047 2136 2208 2330 2370 2528 2670 2760 2796 2848 3160 3495 3560 3634 3680 3728 3792 4094 4272 4660 4740 5340 5359 5451 5520 5592 6141 6320 6990 7031 7120 7268 7456 7584 8188 8544 9085 9320 9480 10235 10680 10718 10902 11040 11184 12282 12640 13980 14062 14240 14536 16077 16376 18170 18407 18640 18960 20470 20737 21093 21360 21436 21804 22368 24564 26795 27255 27960 28124 29072 30705 32154 32752 35155 36340 36814 37280 37920 40940 41474 42186 42720 42872 43608 49128 53590 54510 55221 55920 56248 58144 61410 62211 64308 65504 70310 72680 73628 80385 81880 82948 84372 85744 87216 92035 98256 103685 105465 107180 109020 110442 111840 112496 122820 124422 128616 140620 145360 147256 160770 161713 163760 165896 168744 171488 174432 184070 196512 207370 210930 214360 218040 220884 224992 245640 248844 257232 276105 281240 290720 294512 311055 321540 323426 327520 331792 337488 368140 414740 421860 423361 428720 436080 441768 476951 485139 491280 497688 514464 552210 562480 589024 622110 643080 646852 663584 674976 736280 808565 829480 843720 846722 857440 872160 883536 953902 970278 982560 995376 1104420 1124960 1244220 1270083 1286160 1293704 1430853 1472560 1617130 1638223 1658960 1687440 1693444 1767072 1907804 1940556 1990752 2116805 2208840 2384755 2425695 2488440 2540166 2572320 2587408 2861706 2945120 3234260 3276446 3317920 3374880 3386888 3815608 3881112 4233610 4417680 4769510 4851390 4914669 4976880 5080332 5174816 5723412 6350415 6468520 6552892 6773776 7154265 7631216 7762224 8191115 8467220 8835360 9539020 9702780 9829338 9953760 10160664 11446824 12700830 12937040 13105784 13547552 14308530 15262432 15524448 16382230 16934440 19078040 19405560 19658676 20321328 22893648 24573345 25401660 25874080 26211568 28617060 32764460 33868880 37679129 38156080 38811120 39317352 40642656 45787296 49146690 50803320 52423136 57234120 65528920 67737760 75358258 76312160 77622240 78634704 98293380 101606640 113037387 114468240 131057840 150716516 157269408 188395645 196586760 203213280 226074774 228936480 262115680 301433032 376791290 393173520 452149548 565186935 602866064 753582580 786347040 904299096 1130373870 1205732128 1507165160 1808598192 2260747740 3014330320 3617196384 4521495480 6028660640 9042990960 18085981920
• Sum of all divisors σ(n): 61138022400
• Sum of proper divisors (its aliquot sum) s(n): 43052040480
• 18085981920 is an abundant number, because the sum of its proper divisors (43052040480) is greater than itself. Its abundance is 24966058560

Bases of 18085981920

• Binary: 10000110110000000100010111011100000₂
• Hexadecimal: 0x436022EE0
• Base-36: 8B3XCYO

Squares and roots of 18085981920

• 18085981920 squared (18085981920²) is 327102742010566886400
• 18085981920 cubed (18085981920³) is 5915974277985537156381093888000
• The square root of 18085981920 is 134484.1325956337
• The cube root of 18085981920 is 2624.9076633279

Scales and comparisons

• 18,085,981,920 seconds is equal to 575 years, 4 weeks, 11 hours, 52 minutes.
• To count from 1 to 18,085,981,920 would take you about one thousand, one hundred fifty 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 18085981920 cubic inches would be around 218.7 feet tall.

Recreational maths with 18085981920

• 18085981920 backwards is 02918958081
• The number of decimal digits it has is: 11
• The sum of 18085981920's digits is 51
• More coming soon!