18990663658965

Names of 18990663658965

• Cardinal: 18990663658965 can be written as Eighteen trillion, nine hundred ninety billion, six hundred sixty-three million, six hundred fifty-eight thousand, nine hundred sixty-five.

Scientific notation

• Scientific notation: 1.8990663658965 × 10¹³

Factors of 18990663658965

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 147

Divisors of 18990663658965

• Number of divisors d(n): 336
• Complete list of divisors:
  1 3 5 9 15 27 31 45 47 61 81 93 135 141 155 183 235 243 279 305 405 423 465 549 705 729 837 915 961 1215 1269 1395 1457 1647 1891 2115 2511 2745 2867 2883 3645 3721 3807 4185 4371 4805 4941 5673 6345 7285 7533 8235 8601 8649 9455 11163 11421 12555 13113 14335 14415 14823 17019 18605 19035 21855 22599 24705 25803 25947 28365 29791 33489 34263 37665 39339 43005 43245 44469 45167 51057 55815 57105 58621 65565 74115 77409 77841 85095 88877 89373 100467 112995 115351 118017 129015 129735 135501 148955 153171 167445 171315 174887 175863 196695 222345 225835 232227 233523 255285 266631 268119 293105 301401 346053 354051 387045 389205 406503 444385 446865 459513 502335 524661 527589 576755 590085 677505 696681 700569 765855 799893 804357 874435 879315 904203 1038159 1062153 1161135 1167615 1219509 1333155 1340595 1378539 1400177 1507005 1573983 1582767 1730265 1770255 1817251 2032515 2090043 2297565 2399679 2413071 2623305 2637945 2712609 2755187 3114477 3483405 3502845 3575881 3658527 3999465 4021785 4200531 4521015 4721949 4748301 5190795 5310765 5421497 5451753 6097545 6892695 7000885 7199037 7239213 7869915 7913835 8265561 9086255 9343431 10450215 10727643 10975581 11998395 12065355 12601593 13563045 13775935 14165847 14244903 15572385 16264491 16355259 17879405 18292635 21002655 21597111 21717639 23609745 23741505 24796683 27107485 27258765 28030293 32182929 32926743 35995185 36196065 37804779 41327805 42497541 42734709 46717155 48793473 49065777 53638215 54877905 63007965 64791333 70829235 71224515 74390049 81322455 81776295 84090879 85410797 96548787 107985555 108588195 110852311 113414337 123983415 127492623 140151465 146380419 147197331 160914645 164633715 168066407 189023895 212487705 213673545 223170147 243967365 245328885 256232391 289646361 323956665 332556933 340243011 371950245 420454395 427053985 439141257 441591993 482743935 504199221 554261555 567071685 637463115 669510441 731902095 735986655 768697173 840332035 868939083 997670799 1020729033 1115850735 1281161955 1317423771 1324775979 1448231805 1512597663 1662784665 1701215055 2008531323 2195706285 2207959965 2306091519 2520996105 2606817249 2993012397 3347552205 3843485865 3952271313 4344695415 4537792989 4988353995 5103645165 5210058617 6587118855 6623879895 6918274557 7562988315 8979037191 10042656615 11530457595 13034086245 13613378967 14965061985 15630175851 19761356565 20754823671 22688964945 26050293085 26937111573 34591372785 40840136901 44895185955 46890527553 62264471013 68066894835 78150879255 80811334719 103774118355 122520410703 134685557865 140671582659 204200684505 234452637765 311322355065 404056673595 422014747977 612602053515 703357913295 1266044243931 2110073739885 3798132731793 6330221219655 18990663658965
• Sum of all divisors σ(n): 36658445211648
• Sum of proper divisors (its aliquot sum) s(n): 17667781552683
• 18990663658965 is a deficient number, because the sum of its proper divisors (17667781552683) is less than itself. Its deficiency is 1322882106282

Bases of 18990663658965

• Binary: 100010100010110011011110000101110110111010101₂
• Hexadecimal: 0x11459BC2EDD5
• Base-36: 6QC6UTGB9

Squares and roots of 18990663658965

• 18990663658965 squared (18990663658965²) is 360645306207933921824871225
• 18990663658965 cubed (18990663658965³) is 6848893710379315240955651247698441782125
• The square root of 18990663658965 is 4357827.8601804593
• The cube root of 18990663658965 is 26679.6450504511

Scales and comparisons

• 18,990,663,658,965 seconds is equal to 603,844 years, 18 weeks, 5 days, 21 hours, 42 minutes, 45 seconds.
• To count from 1 to 18,990,663,658,965 would take you about one million, five hundred nine thousand, six hundred ten 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 18990663658965 cubic inches would be around 2223.3 feet tall.

Recreational maths with 18990663658965

• 18990663658965 backwards is 56985636609981
• 18990663658965 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 18990663658965's digits is 81
• More coming soon!