18012426993

Names of 18012426993

• Cardinal: 18012426993 can be written as Eighteen billion, twelve million, four hundred twenty-six thousand, nine hundred ninety-three.

Scientific notation

• Scientific notation: 1.8012426993 × 10¹⁰

Factors of 18012426993

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 74

Divisors of 18012426993

• Number of divisors d(n): 108
• Complete list of divisors:
  1 3 9 11 17 33 43 51 99 121 129 153 187 289 363 387 473 561 731 867 1089 1331 1419 1683 2057 2193 2601 3179 3993 4257 5203 6171 6579 8041 9537 11979 12427 14641 15609 18513 22627 24123 28611 34969 37281 43923 46827 57233 67881 72369 88451 104907 111843 131769 136697 161051 171699 203643 248897 265353 314721 384659 410091 483153 515097 629563 746691 796059 972961 1153977 1230273 1449459 1503667 1888689 2240073 2737867 2918883 3461931 4231249 4511001 5666067 6925193 8213601 8756649 10702571 12693747 13533003 16540337 20775579 24640803 32107713 38081241 46543739 49621011 62326737 96323139 117728281 139631217 148863033 181943707 353184843 418893651 545831121 1059554529 1637493363 2001380777 6004142331 18012426993
• Sum of all divisors σ(n): 31109302224
• Sum of proper divisors (its aliquot sum) s(n): 13096875231
• 18012426993 is a deficient number, because the sum of its proper divisors (13096875231) is less than itself. Its deficiency is 4915551762

Bases of 18012426993

• Binary: 10000110001100111111101001011110001₂
• Hexadecimal: 0x4319FD2F1
• Base-36: 89W4TM9

Squares and roots of 18012426993

• 18012426993 squared (18012426993²) is 324447526178155022049
• 18012426993 cubed (18012426993³) is 5844087378343473646093917768657
• The square root of 18012426993 is 134210.3833278185
• The cube root of 18012426993 is 2621.3443653753

Scales and comparisons

• 18,012,426,993 seconds is equal to 572 years, 38 weeks, 3 days, 3 hours, 56 minutes, 33 seconds.
• To count from 1 to 18,012,426,993 would take you about one thousand, one hundred forty-five 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 18012426993 cubic inches would be around 218.4 feet tall.

Recreational maths with 18012426993

• 18012426993 backwards is 39962421081
• The number of decimal digits it has is: 11
• The sum of 18012426993's digits is 45
• More coming soon!