1218111440

Names of 1218111440

• Cardinal: 1218111440 can be written as One billion, two hundred eighteen million, one hundred eleven thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.21811144 × 10⁹

Factors of 1218111440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 299

Divisors of 1218111440

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 26 28 35 40 52 56 61 65 70 80 91 104 112 122 130 140 169 182 208 211 244 260 280 305 338 364 422 427 455 488 520 560 610 676 728 793 844 845 854 910 976 1040 1055 1183 1220 1352 1456 1477 1586 1688 1690 1708 1820 2110 2135 2366 2440 2704 2743 2954 3172 3376 3380 3416 3640 3965 4220 4270 4732 4880 5486 5551 5908 5915 6344 6760 6832 7280 7385 7930 8440 8540 9464 10309 10972 11102 11816 11830 12688 12871 13520 13715 14770 15860 16880 17080 18928 19201 20618 21944 22204 23632 23660 25742 27430 27755 29540 31720 34160 35659 38402 41236 43888 44408 47320 51484 51545 54860 55510 59080 63440 64355 71318 72163 76804 82472 88816 90097 94640 96005 102968 103090 109720 111020 118160 128710 142636 144326 153608 164944 167323 178295 180194 192010 205936 206180 219440 222040 249613 257420 285272 288652 307216 334646 356590 360388 360815 384020 412360 444080 450485 499226 514840 570544 577304 669292 713180 720776 721630 768040 824720 836615 900970 998452 1029680 1154608 1171261 1248065 1338584 1426360 1441552 1443260 1536080 1673230 1801940 1996904 2175199 2342522 2496130 2677168 2852720 2886520 3346460 3603880 3993808 4350398 4685044 4992260 5773040 5856305 6692920 7207760 8700796 9370088 9984520 10875995 11712610 13385840 15226393 17401592 18740176 19969040 21751990 23425220 30452786 34803184 43503980 46850440 60905572 76131965 87007960 93700880 121811144 152263930 174015920 243622288 304527860 609055720 1218111440
• Sum of all divisors σ(n): 3579163776
• Sum of proper divisors (its aliquot sum) s(n): 2361052336
• 1218111440 is an abundant number, because the sum of its proper divisors (2361052336) is greater than itself. Its abundance is 1142940896

Bases of 1218111440

• Binary: 1001000100110101110011111010000₂
• Hexadecimal: 0x489AE7D0
• Base-36: K58CSW

Squares and roots of 1218111440

• 1218111440 squared (1218111440²) is 1483795480258873600
• 1218111440 cubed (1218111440³) is 1807428249123628093673984000
• The square root of 1218111440 is 34901.4532648713
• The cube root of 1218111440 is 1067.9780840607

Scales and comparisons

• 1,218,111,440 seconds is equal to 38 years, 38 weeks, 12 hours, 17 minutes, 20 seconds.
• To count from 1 to 1,218,111,440 would take you about seventy-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 1218111440 cubic inches would be around 89 feet tall.

Recreational maths with 1218111440

• 1218111440 backwards is 0441118121
• The number of decimal digits it has is: 10
• The sum of 1218111440's digits is 23
• More coming soon!