18385041990

Names of 18385041990

• Cardinal: 18385041990 can be written as Eighteen billion, three hundred eighty-five million, forty-one thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 1.838504199 × 10¹⁰

Factors of 18385041990

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 9886

Divisors of 18385041990

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 21 30 35 42 70 83 105 109 166 210 218 249 327 415 498 545 581 654 763 830 1090 1162 1245 1526 1635 1743 2289 2490 2905 3270 3486 3815 4578 5810 7630 8715 9047 9677 11445 17430 18094 19354 22890 27141 29031 45235 48385 54282 58062 63329 67739 90470 96770 126658 135478 135705 145155 189987 203217 271410 290310 316645 338695 379974 406434 633290 677390 803191 949935 1016085 1054793 1606382 1899870 2032170 2109586 2409573 3164379 4015955 4819146 5273965 5622337 6328758 7383551 8031910 10547930 11244674 12047865 14767102 15821895 16867011 22150653 24095730 28111685 31643790 33734022 36917755 44301306 56223370 73835510 84335055 87547819 110753265 168670110 175095638 221506530 262643457 437739095 525286914 612834733 875478190 1225669466 1313217285 1838504199 2626434570 3064173665 3677008398 6128347330 9192520995 18385041990
• Sum of all divisors σ(n): 51508638720
• Sum of proper divisors (its aliquot sum) s(n): 33123596730
• 18385041990 is an abundant number, because the sum of its proper divisors (33123596730) is greater than itself. Its abundance is 14738554740

Bases of 18385041990

• Binary: 10001000111110101010111101001000110₂
• Hexadecimal: 0x447D57A46
• Base-36: 8G1Z96U

Squares and roots of 18385041990

• 18385041990 squared (18385041990²) is 338009768974063160100
• 18385041990 cubed (18385041990³) is 6214323795618350419350592599000
• The square root of 18385041990 is 135591.4524960921
• The cube root of 18385041990 is 2639.2966632451

Scales and comparisons

• 18,385,041,990 seconds is equal to 584 years, 30 weeks, 3 days, 20 hours, 6 minutes, 30 seconds.
• To count from 1 to 18,385,041,990 would take you about one thousand, one hundred sixty-nine 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 18385041990 cubic inches would be around 219.9 feet tall.

Recreational maths with 18385041990

• 18385041990 backwards is 09914058381
• The number of decimal digits it has is: 11
• The sum of 18385041990's digits is 48
• More coming soon!