18090433890

Names of 18090433890

• Cardinal: 18090433890 can be written as Eighteen billion, ninety million, four hundred thirty-three thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 1.809043389 × 10¹⁰

Factors of 18090433890

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2481

Divisors of 18090433890

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 5 6 9 10 15 17 18 27 30 34 45 51 54 61 81 85 90 102 122 135 153 162 170 183 243 255 270 305 306 366 405 459 486 510 549 610 729 765 810 915 918 1037 1098 1215 1377 1458 1530 1647 1830 2074 2295 2393 2430 2745 2754 3111 3294 3645 4131 4590 4786 4941 5185 5490 6222 6885 7179 7290 8235 8262 9333 9882 10370 11965 12393 13770 14358 14823 15555 16470 18666 20655 21537 23930 24705 24786 27999 29646 31110 35895 40681 41310 43074 44469 46665 49410 55998 61965 64611 71790 74115 81362 83997 88938 93330 107685 122043 123930 129222 139995 145973 148230 167994 193833 203405 215370 222345 244086 251991 279990 291946 323055 366129 387666 406810 419985 437919 444690 503982 581499 610215 646110 729865 732258 755973 839970 875838 969165 1098387 1162998 1220430 1259955 1313757 1459730 1511946 1744497 1830645 1938330 2189595 2196774 2481541 2519910 2627514 2907495 3295161 3488994 3661290 3779865 3941271 4379190 4963082 5491935 5814990 6568785 6590322 7444623 7559730 7882542 8722485 9885483 10983870 11823813 12407705 13137570 14889246 16475805 17444970 19706355 19770966 22333869 23647626 24815410 29656449 32951610 35471439 37223115 39412710 44667738 49427415 59119065 59312898 67001607 70942878 74446230 98854830 106414317 111669345 118238130 134003214 148282245 177357195 201004821 212828634 223338690 296564490 335008035 354714390 402009642 532071585 603014463 670016070 1005024105 1064143170 1206028926 1809043389 2010048210 3015072315 3618086778 6030144630 9045216945 18090433890
• Sum of all divisors σ(n): 52563104496
• Sum of proper divisors (its aliquot sum) s(n): 34472670606
• 18090433890 is an abundant number, because the sum of its proper divisors (34472670606) is greater than itself. Its abundance is 16382236716

Bases of 18090433890

• Binary: 10000110110010001100001110101100010₂
• Hexadecimal: 0x436461D62
• Base-36: 8B6KS4I

Squares and roots of 18090433890

• 18090433890 squared (18090433890²) is 327263798328460532100
• 18090433890 cubed (18090433890³) is 5920344108251307761429272869000
• The square root of 18090433890 is 134500.6836042105
• The cube root of 18090433890 is 2625.1230244383

Scales and comparisons

• 18,090,433,890 seconds is equal to 575 years, 11 weeks, 3 days, 31 minutes, 30 seconds.
• To count from 1 to 18,090,433,890 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 18090433890 cubic inches would be around 218.8 feet tall.

Recreational maths with 18090433890

• 18090433890 backwards is 09833409081
• 18090433890 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18090433890's digits is 45
• More coming soon!