18158747648

Names of 18158747648

• Cardinal: 18158747648 can be written as Eighteen billion, one hundred fifty-eight million, seven hundred forty-seven thousand, six hundred forty-eight.

Scientific notation

• Scientific notation: 1.8158747648 × 10¹⁰

Factors of 18158747648

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 325

Divisors of 18158747648

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 8 16 29 32 58 64 97 116 128 194 197 232 256 388 394 464 512 776 788 928 1024 1552 1576 1856 2048 2813 3104 3152 3712 4096 5626 5713 6208 6304 7424 8192 11252 11426 12416 12608 14848 16384 19109 22504 22852 24832 25216 29696 32768 38218 45008 45704 49664 50432 59392 76436 90016 91408 99328 100864 118784 152872 180032 182816 198656 201728 237568 305744 360064 365632 397312 403456 475136 554161 611488 720128 731264 794624 806912 950272 1108322 1222976 1440256 1462528 1589248 1613824 2216644 2445952 2880512 2925056 3178496 3227648 4433288 4891904 5761024 5850112 6455296 8866576 9783808 11522048 11700224 17733152 19567616 23044096 23400448 35466304 39135232 46088192 46800896 70932608 78270464 92176384 93601792 141865216 156540928 187203584 283730432 313081856 567460864 626163712 1134921728 2269843456 4539686912 9079373824 18158747648
• Sum of all divisors σ(n): 38149234200
• Sum of proper divisors (its aliquot sum) s(n): 19990486552
• 18158747648 is an abundant number, because the sum of its proper divisors (19990486552) is greater than itself. Its abundance is 1831738904

Bases of 18158747648

• Binary: 10000111010010110001000000000000000₂
• Hexadecimal: 0x43A588000
• Base-36: 8CB8ZCW

Squares and roots of 18158747648

• 18158747648 squared (18158747648²) is 329740116143745531904
• 18158747648 cubed (18158747648³) is 5987667558476486007372268961792
• The square root of 18158747648 is 134754.3975089495
• The cube root of 18158747648 is 2628.4232356457

Scales and comparisons

• 18,158,747,648 seconds is equal to 577 years, 20 weeks, 2 days, 16 hours, 34 minutes, 8 seconds.
• To count from 1 to 18,158,747,648 would take you about one thousand, one hundred fifty-four 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 18158747648 cubic inches would be around 219 feet tall.

Recreational maths with 18158747648

• 18158747648 backwards is 84674785181
• The number of decimal digits it has is: 11
• The sum of 18158747648's digits is 59
• More coming soon!