18978820992

Names of 18978820992

• Cardinal: 18978820992 can be written as Eighteen billion, nine hundred seventy-eight million, eight hundred twenty thousand, nine hundred ninety-two.

Scientific notation

• Scientific notation: 1.8978820992 × 10¹⁰

Factors of 18978820992

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 22
• Sum of prime factors: 36

Divisors of 18978820992

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 31 32 36 48 54 62 64 72 81 93 96 108 124 128 144 162 186 192 216 243 248 279 288 324 372 384 432 486 496 558 576 648 729 744 837 864 972 992 1116 1152 1296 1458 1488 1674 1728 1944 1984 2187 2232 2511 2592 2916 2976 3348 3456 3888 3968 4374 4464 5022 5184 5832 5952 6561 6696 7533 7776 8748 8928 10044 10368 11664 11904 13122 13392 15066 15552 17496 17856 19683 20088 22599 23328 26244 26784 30132 31104 34992 35712 39366 40176 45198 46656 52488 53568 59049 60264 67797 69984 78732 80352 90396 93312 104976 107136 118098 120528 135594 139968 157464 160704 177147 180792 203391 209952 236196 241056 271188 279936 314928 321408 354294 361584 406782 419904 472392 482112 531441 542376 610173 629856 708588 723168 813564 839808 944784 964224 1062882 1084752 1220346 1259712 1417176 1446336 1594323 1627128 1830519 1889568 2125764 2169504 2440692 2519424 2834352 2892672 3188646 3254256 3661038 3779136 4251528 4339008 4782969 4881384 5491557 5668704 6377292 6508512 7322076 7558272 8503056 8678016 9565938 9762768 10983114 11337408 12754584 13017024 14644152 16474671 17006112 19131876 19525536 21966228 22674816 25509168 26034048 29288304 32949342 34012224 38263752 39051072 43932456 49424013 51018336 58576608 65898684 68024448 76527504 78102144 87864912 98848026 102036672 117153216 131797368 148272039 153055008 175729824 197696052 204073344 234306432 263594736 296544078 306110016 351459648 395392104 527189472 593088156 612220032 702919296 790784208 1054378944 1186176312 1581568416 2108757888 2372352624 3163136832 4744705248 6326273664 9489410496 18978820992
• Sum of all divisors σ(n): 58543536480
• Sum of proper divisors (its aliquot sum) s(n): 39564715488
• 18978820992 is an abundant number, because the sum of its proper divisors (39564715488) is greater than itself. Its abundance is 20585894496

Bases of 18978820992

• Binary: 10001101011001110011101001110000000₂
• Hexadecimal: 0x46B39D380
• Base-36: 8PVI000

Squares and roots of 18978820992

• 18978820992 squared (18978820992²) is 360195646246379864064
• 18978820992 cubed (18978820992³) is 6836088692207800168103949631488
• The square root of 18978820992 is 137763.6417637107
• The cube root of 18978820992 is 2667.4098046633

Scales and comparisons

• 18,978,820,992 seconds is equal to 603 years, 24 weeks, 2 days, 6 hours, 43 minutes, 12 seconds.
• To count from 1 to 18,978,820,992 would take you about one thousand, two hundred six 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 18978820992 cubic inches would be around 222.3 feet tall.

Recreational maths with 18978820992

• 18978820992 backwards is 29902887981
• The number of decimal digits it has is: 11
• The sum of 18978820992's digits is 63
• More coming soon!