18644458490

Names of 18644458490

• Cardinal: 18644458490 can be written as Eighteen billion, six hundred forty-four million, four hundred fifty-eight thousand, four hundred ninety.

Scientific notation

• Scientific notation: 1.864445849 × 10¹⁰

Factors of 18644458490

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 161

Divisors of 18644458490

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 5 7 10 14 23 35 41 46 70 82 83 115 161 166 205 230 287 322 410 415 574 581 805 830 943 1162 1435 1610 1681 1886 1909 2870 2905 3362 3403 3818 4715 5810 6601 6806 6889 8405 9430 9545 11767 13202 13363 13778 16810 17015 19090 23534 23821 26726 33005 34030 34445 38663 47642 48223 58835 66010 66815 68890 77326 78269 96446 117670 119105 133630 139523 156538 158447 193315 238210 241115 270641 279046 282449 316894 386630 391345 482230 541282 547883 564898 697615 782690 792235 976661 1095766 1109129 1353205 1395230 1412245 1584470 1953322 1977143 2218258 2706410 2739415 2824490 3209029 3954286 4883305 5478830 5545645 6418058 6496327 9766610 9885715 11091290 11580409 12992654 16045145 19771430 22463203 23160818 32090290 32481635 44926406 45474289 57902045 64963270 81062863 90948578 112316015 115804090 162125726 224632030 227371445 266349407 405314315 454742890 532698814 810628630 1331747035 1864445849 2663494070 3728891698 9322229245 18644458490
• Sum of all divisors σ(n): 41522039424
• Sum of proper divisors (its aliquot sum) s(n): 22877580934
• 18644458490 is an abundant number, because the sum of its proper divisors (22877580934) is greater than itself. Its abundance is 4233122444

Bases of 18644458490

• Binary: 10001010111010010111101101111111010₂
• Hexadecimal: 0x4574BDBFA
• Base-36: 8KCFG8Q

Squares and roots of 18644458490

• 18644458490 squared (18644458490²) is 347615832385333080100
• 18644458490 cubed (18644458490³) is 6481108957375140296748295049000
• The square root of 18644458490 is 136544.7124205109
• The cube root of 18644458490 is 2651.6523924909

Scales and comparisons

• 18,644,458,490 seconds is equal to 592 years, 43 weeks, 3 days, 8 hours, 14 minutes, 50 seconds.
• To count from 1 to 18,644,458,490 would take you about one thousand, one hundred eighty-five 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 18644458490 cubic inches would be around 221 feet tall.

Recreational maths with 18644458490

• 18644458490 backwards is 09485444681
• The number of decimal digits it has is: 11
• The sum of 18644458490's digits is 53
• More coming soon!