18729867189345138

Names of 18729867189345138

• Cardinal: 18729867189345138 can be written as Eighteen quadrillion, seven hundred twenty-nine trillion, eight hundred sixty-seven billion, one hundred eighty-nine million, three hundred forty-five thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 1.8729867189345138 × 10¹⁶

Factors of 18729867189345138

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 933

Divisors of 18729867189345138

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 3 6 9 18 41 82 123 246 369 738 887 1681 1774 2661 3362 5043 5322 7983 10086 15129 15966 30258 36367 72734 109101 218202 327303 654606 786769 1491047 1573538 2360307 2982094 4473141 4720614 7080921 8946282 13419423 14161842 26838846 32257529 64515058 96772587 193545174 290317761 580635522 697864103 1322558689 1395728206 2093592309 2645117378 3967676067 4187184618 6280776927 7935352134 11903028201 12561553854 23806056402 28612428223 57224856446 85837284669 171674569338 257511854007 515023708014 619005459361 1173109557143 1238010918722 1857016378083 2346219114286 3519328671429 3714032756166 5571049134249 7038657342858 10557986014287 11142098268498 21115972028574 25379223833801 50758447667602 76137671501403 152275343002806 228413014504209 456826029008418 1040548177185841 2081096354371682 3121644531557523 6243289063115046 9364933594672569 18729867189345138
• Sum of all divisors σ(n): 41642257154997837
• Sum of proper divisors (its aliquot sum) s(n): 22912389965652699
• 18729867189345138 is an abundant number, because the sum of its proper divisors (22912389965652699) is greater than itself. Its abundance is 4182522776307561

Bases of 18729867189345138

• Binary: 1000010100010101011011100001000100000101101101101110010₂
• Hexadecimal: 0x428AB70882DB72
• Base-36: 54F6M79P20I

Squares and roots of 18729867189345138

• 18729867189345138 squared (18729867189345138²) is 350807924930507539524873284239044
• 18729867189345138 cubed (18729867189345138³) is 6570585842918165415258710287028076763903011168072
• The square root of 18729867189345138 is 136857105.0013302671
• The cube root of 18729867189345138 is 265569.5224480421

Scales and comparisons

• 18,729,867,189,345,138 seconds is equal to 595,551,841 years, 17 weeks, 4 days, 1 hour, 12 minutes, 18 seconds.
• To count from 1 to 18,729,867,189,345,138 would take you about one billion, seven hundred eighty-six million, six hundred fifty-five thousand, five hundred twenty-four 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 18729867189345138 cubic inches would be around 22130.8 feet tall.

Recreational maths with 18729867189345138

• 18729867189345138 backwards is 83154398176892781
• The number of decimal digits it has is: 17
• The sum of 18729867189345138's digits is 90
• More coming soon!