18381969840

Names of 18381969840

• Cardinal: 18381969840 can be written as Eighteen billion, three hundred eighty-one million, nine hundred sixty-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.838196984 × 10¹⁰

Factors of 18381969840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2190

Divisors of 18381969840

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 20 23 24 26 30 39 40 46 48 52 60 65 69 78 80 92 104 115 120 127 130 138 156 184 195 208 230 240 254 260 276 299 312 345 368 381 390 460 508 520 552 598 624 635 690 762 780 897 920 1016 1040 1104 1196 1270 1380 1495 1524 1560 1651 1794 1840 1905 2017 2032 2392 2540 2760 2921 2990 3048 3120 3302 3588 3810 4034 4485 4784 4953 5080 5520 5842 5980 6051 6096 6604 7176 7620 8068 8255 8763 8970 9906 10085 10160 11684 11960 12102 13208 14352 14605 15240 16136 16510 17526 17940 19812 20170 23368 23920 24204 24765 26221 26416 29210 30255 30480 32272 33020 35052 35880 37973 39624 40340 43815 46391 46736 48408 49530 52442 58420 60510 66040 70104 71760 75946 78663 79248 80680 87630 92782 96816 99060 104884 113919 116840 121020 131105 132080 139173 140208 151892 157326 161360 175260 185564 189865 198120 209768 227838 231955 233680 242040 256159 262210 278346 303784 314652 350520 371128 379730 393315 396240 419536 455676 463910 484080 512318 524420 556692 569595 603083 607568 629304 695865 701040 742256 759460 768477 786630 911352 927820 1024636 1048840 1113384 1139190 1206166 1258608 1280795 1391730 1518920 1536954 1573260 1809249 1822704 1855640 2049272 2097680 2226768 2278380 2412332 2561590 2783460 3015415 3037840 3073908 3146520 3330067 3618498 3711280 3842385 4098544 4556760 4824664 5123180 5566920 5891657 6030830 6147816 6293040 6660134 7236996 7684770 9046245 9113520 9649328 9990201 10246360 11133840 11783314 12061660 12295632 13320268 14473992 15369540 16650335 17674971 18092490 19980402 20492720 23566628 24123320 26640536 28947984 29458285 30739080 33300670 35349942 36184980 39960804 47133256 48246640 49951005 53281072 58916570 61478160 66601340 70699884 72369960 76591541 79921608 88374855 94266512 99902010 117833140 133202680 141399768 144739920 153183082 159843216 176749710 199804020 229774623 235666280 266405360 282799536 306366164 353499420 382957705 399608040 459549246 471332560 612732328 706998840 765915410 799216080 919098492 1148873115 1225464656 1413997680 1531830820 1838196984 2297746230 3063661640 3676393968 4595492460 6127323280 9190984920 18381969840
• Sum of all divisors σ(n): 64571867136
• Sum of proper divisors (its aliquot sum) s(n): 46189897296
• 18381969840 is an abundant number, because the sum of its proper divisors (46189897296) is greater than itself. Its abundance is 27807927456

Bases of 18381969840

• Binary: 10001000111101001101001100110110000₂
• Hexadecimal: 0x447A699B0
• Base-36: 8G05EPC

Squares and roots of 18381969840

• 18381969840 squared (18381969840²) is 337896815198669625600
• 18381969840 cubed (18381969840³) is 6211209066013998665903291904000
• The square root of 18381969840 is 135580.1233219679
• The cube root of 18381969840 is 2639.1496457781

Scales and comparisons

• 18,381,969,840 seconds is equal to 584 years, 25 weeks, 3 days, 6 hours, 44 minutes.
• To count from 1 to 18,381,969,840 would take you about one thousand, one hundred sixty-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 18381969840 cubic inches would be around 219.9 feet tall.

Recreational maths with 18381969840

• 18381969840 backwards is 04896918381
• The number of decimal digits it has is: 11
• The sum of 18381969840's digits is 57
• More coming soon!