1293131385

Names of 1293131385

• Cardinal: 1293131385 can be written as One billion, two hundred ninety-three million, one hundred thirty-one thousand, three hundred eighty-five.

Scientific notation

• Scientific notation: 1.293131385 × 10⁹

Factors of 1293131385

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2727

Divisors of 1293131385

• Number of divisors d(n): 120
• Complete list of divisors:
  1 3 5 7 9 13 15 21 27 35 39 45 63 65 81 91 105 117 135 169 189 195 273 315 351 405 455 507 567 585 819 845 945 1053 1183 1365 1521 1755 2457 2535 2699 2835 3549 4095 4563 5265 5915 7371 7605 8097 10647 12285 13495 13689 17745 18893 22815 24291 31941 35087 36855 40485 53235 56679 68445 72873 94465 95823 105261 121455 159705 170037 175435 218619 245609 283395 315783 364365 456131 479115 510111 526305 736827 850185 947349 1093095 1228045 1368393 1530333 1578915 2210481 2280655 2550555 2842047 3192917 3684135 4105179 4736745 6631443 6841965 7651665 9578751 11052405 12315537 14210235 15964585 19894329 20525895 28736253 33157215 36946611 47893755 61577685 86208759 99471645 143681265 184733055 258626277 431043795 1293131385
• Sum of all divisors σ(n): 2869732800
• Sum of proper divisors (its aliquot sum) s(n): 1576601415
• 1293131385 is an abundant number, because the sum of its proper divisors (1576601415) is greater than itself. Its abundance is 283470030

Bases of 1293131385

• Binary: 1001101000100111001111001111001₂
• Hexadecimal: 0x4D139E79
• Base-36: LDWAK9

Squares and roots of 1293131385

• 1293131385 squared (1293131385²) is 1672188778872018225
• 1293131385 cubed (1293131385³) is 2162359791604231665039491625
• The square root of 1293131385 is 35960.1360536915
• The cube root of 1293131385 is 1089.4673448871

Scales and comparisons

• 1,293,131,385 seconds is equal to 41 years, 6 weeks, 19 hours, 9 minutes, 45 seconds.
• To count from 1 to 1,293,131,385 would take you about eighty-two 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 1293131385 cubic inches would be around 90.8 feet tall.

Recreational maths with 1293131385

• 1293131385 backwards is 5831313921
• The number of decimal digits it has is: 10
• The sum of 1293131385's digits is 36
• More coming soon!