18168398684540

Names of 18168398684540

• Cardinal: 18168398684540 can be written as Eighteen trillion, one hundred sixty-eight billion, three hundred ninety-eight million, six hundred eighty-four thousand, five hundred forty.

Scientific notation

• Scientific notation: 1.816839868454 × 10¹³

Factors of 18168398684540

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 140

Divisors of 18168398684540

• Number of divisors d(n): 252
• Complete list of divisors:
  1 2 4 5 10 13 20 26 52 53 65 67 106 130 134 169 212 260 265 268 335 338 530 670 676 689 845 871 1060 1340 1378 1690 1742 2197 2756 2809 3380 3445 3484 3551 4355 4394 5618 6890 7102 8710 8788 8957 10985 11236 11323 13780 14045 14204 17420 17755 17914 21970 22646 28090 28561 35510 35828 36517 43940 44785 45292 46163 56180 56615 57122 71020 73034 89570 92326 113230 114244 116441 142805 146068 147199 179140 182585 184652 188203 226460 230815 232882 285610 294398 365170 371293 376406 461630 465764 474721 571220 582205 588796 600119 730340 735995 742586 752812 923260 941015 949442 1164410 1200238 1471990 1485172 1513733 1856465 1882030 1898884 1913587 2328820 2373605 2400476 2446639 2943980 3000595 3027466 3712930 3764060 3827174 4747210 4826809 4893278 6001190 6054932 6171373 7425860 7568665 7654348 7801547 9494420 9567935 9653618 9786556 12002380 12233195 12342746 15137330 15603094 19135870 19307236 19678529 24134045 24466390 24685492 24876631 30274660 30856865 31206188 31806307 38271740 39007735 39357058 48268090 48932780 49753262 61713730 63612614 78015470 78714116 80227849 96536180 98392645 99506524 101420111 123427460 124383155 127225228 156030940 159031535 160455698 196785290 202840222 248766310 255820877 318063070 320911396 323396203 393570580 401139245 405680444 413481991 497532620 507100555 511641754 636126140 646792406 802278490 826963982 1014201110 1023283508 1042962037 1279104385 1293584812 1318461443 1604556980 1616981015 1653927964 2028402220 2067409955 2085924074 2558208770 2636922886 3233962030 4134819910 4171848148 5116417540 5214810185 5273845772 5375265883 6467924060 6592307215 8269639820 10429620370 10750531766 13184614430 13558506481 17139998759 20859240740 21501063532 26369228860 26876329415 27117012962 34279997518 53752658830 54234025924 67792532405 68559995036 69878456479 85699993795 107505317660 135585064810 139756912958 171399987590 271170129620 279513825916 342799975180 349392282395 698784564790 908419934227 1397569129580 1816839868454 3633679736908 4542099671135 9084199342270 18168398684540
• Sum of all divisors σ(n): 42756462311304
• Sum of proper divisors (its aliquot sum) s(n): 24588063626764
• 18168398684540 is an abundant number, because the sum of its proper divisors (24588063626764) is greater than itself. Its abundance is 6419664942224

Bases of 18168398684540

• Binary: 100001000011000101000111100110010000101111100₂
• Hexadecimal: 0x108628F3217C
• Base-36: 6FUG3HDH8

Squares and roots of 18168398684540

• 18168398684540 squared (18168398684540²) is 330090710760394802435011600
• 18168398684540 cubed (18168398684540³) is 5997219635158030551691317942279640664000
• The square root of 18168398684540 is 4262440.4611137971
• The cube root of 18168398684540 is 26288.8880585789

Scales and comparisons

• 18,168,398,684,540 seconds is equal to 577,698 years, 45 weeks, 5 days, 4 hours, 22 minutes, 20 seconds.
• To count from 1 to 18,168,398,684,540 would take you about one million, four hundred forty-four thousand, two hundred forty-seven 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 18168398684540 cubic inches would be around 2190.7 feet tall.

Recreational maths with 18168398684540

• 18168398684540 backwards is 04548689386181
• The number of decimal digits it has is: 14
• The sum of 18168398684540's digits is 71
• More coming soon!