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18298473468 = 22311318143579
BaseRepresentation
bin10001000010101011…
…001000101111111100
31202020020210202122120
4101002223020233330
5244433402122333
612223423442540
71215311313102
oct210253105774
952206722576
1018298473468
117840013a50
123668156450
1319580155c2
14c58323c72
157216b4db3
hex442ac8bfc

18298473468 has 48 divisors (see below), whose sum is σ = 46593644160. Its totient is φ = 5543121600.

The previous prime is 18298473449. The next prime is 18298473527. The reversal of 18298473468 is 86437489281.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398103 + ... + 441681.

It is an arithmetic number, because the mean of its divisors is an integer number (970700920).

Almost surely, 218298473468 is an apocalyptic number.

It is an amenable number.

18298473468 is an abundant number, since it is smaller than the sum of its proper divisors (28295170692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18298473468 is a wasteful number, since it uses less digits than its factorization.

18298473468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46778 (or 46776 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 60.

The spelling of 18298473468 in words is "eighteen billion, two hundred ninety-eight million, four hundred seventy-three thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 3181 6362 9543 12724 19086 34991 38172 43579 69982 87158 104973 130737 139964 174316 209946 261474 419892 479369 522948 958738 1438107 1917476 2876214 5752428 138624799 277249598 415874397 554499196 831748794 1524872789 1663497588 3049745578 4574618367 6099491156 9149236734 18298473468