18164809728

Names of 18164809728

• Cardinal: 18164809728 can be written as Eighteen billion, one hundred sixty-four million, eight hundred nine thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.8164809728 × 10¹⁰

Factors of 18164809728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 144

Divisors of 18164809728

• Number of divisors d(n): 408
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 23 24 26 32 36 39 46 48 52 64 69 72 78 92 96 103 104 117 128 138 144 156 184 192 206 207 208 234 256 276 288 299 309 312 368 384 412 414 416 468 512 552 576 598 618 624 736 768 824 828 832 897 927 936 1024 1104 1152 1196 1236 1248 1339 1472 1536 1648 1656 1664 1794 1854 1872 2048 2208 2304 2369 2392 2472 2496 2678 2691 2944 3072 3296 3312 3328 3588 3708 3744 4017 4096 4416 4608 4738 4784 4944 4992 5356 5382 5888 6144 6592 6624 6656 7107 7176 7416 7488 8034 8192 8832 9216 9476 9568 9888 9984 10712 10764 11776 12051 12288 13184 13248 13312 14214 14352 14832 14976 16068 16384 17664 18432 18952 19136 19776 19968 21321 21424 21528 23552 24102 24576 26368 26496 26624 28428 28704 29664 29952 30797 32136 32768 35328 36864 37904 38272 39552 39936 42642 42848 43056 47104 48204 49152 52736 52992 53248 56856 57408 59328 59904 61594 64272 65536 70656 73728 75808 76544 79104 79872 85284 85696 86112 92391 94208 96408 98304 105472 105984 106496 113712 114816 118656 119808 123188 128544 141312 147456 151616 153088 158208 159744 170568 171392 172224 184782 188416 192816 196608 210944 211968 212992 227424 229632 237312 239616 246376 257088 277173 282624 294912 303232 306176 316416 319488 341136 342784 344448 369564 376832 385632 421888 423936 425984 454848 459264 474624 479232 492752 514176 554346 565248 589824 606464 612352 632832 638976 682272 685568 688896 739128 753664 771264 843776 847872 851968 909696 918528 949248 958464 985504 1028352 1108692 1130496 1212928 1224704 1265664 1277952 1364544 1371136 1377792 1478256 1507328 1542528 1687552 1695744 1819392 1837056 1898496 1916928 1971008 2056704 2217384 2260992 2425856 2449408 2531328 2555904 2729088 2742272 2755584 2956512 3085056 3375104 3391488 3638784 3674112 3796992 3833856 3942016 4113408 4434768 4521984 4851712 4898816 5062656 5458176 5484544 5511168 5913024 6170112 6750208 6782976 7277568 7348224 7593984 7667712 7884032 8226816 8869536 9703424 9797632 10125312 10916352 10969088 11022336 11826048 12340224 13565952 14555136 14696448 15187968 15768064 16453632 17739072 19406848 19595264 20250624 21832704 21938176 22044672 23652096 24680448 29110272 29392896 30375936 31536128 32907264 35478144 38813696 43665408 43876352 44089344 47304192 49360896 58220544 58785792 60751872 63072256 65814528 70956288 77627392 87330816 87752704 88178688 94608384 98721792 116441088 126144512 131629056 141912576 155254784 174661632 176357376 189216768 197443584 232882176 252289024 263258112 283825152 349323264 378433536 394887168 465764352 504578048 567650304 698646528 756867072 789774336 1009156096 1135300608 1397293056 1513734144 2018312192 2270601216 3027468288 4541202432 6054936576 9082404864 18164809728
• Sum of all divisors σ(n): 59541885312
• Sum of proper divisors (its aliquot sum) s(n): 41377075584
• 18164809728 is an abundant number, because the sum of its proper divisors (41377075584) is greater than itself. Its abundance is 23212265856

Bases of 18164809728

• Binary: 10000111010101101010000000000000000₂
• Hexadecimal: 0x43AB50000
• Base-36: 8CEUWW0

Squares and roots of 18164809728

• 18164809728 squared (18164809728²) is 329960312454443433984
• 18164809728 cubed (18164809728³) is 5993666293526393646458288996352
• The square root of 18164809728 is 134776.8887012903
• The cube root of 18164809728 is 2628.7156922893

Scales and comparisons

• 18,164,809,728 seconds is equal to 577 years, 30 weeks, 2 days, 20 hours, 28 minutes, 48 seconds.
• To count from 1 to 18,164,809,728 would take you about one thousand, one hundred fifty-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 18164809728 cubic inches would be around 219.1 feet tall.

Recreational maths with 18164809728

• 18164809728 backwards is 82790846181
• The number of decimal digits it has is: 11
• The sum of 18164809728's digits is 54
• More coming soon!