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18131828922 = 2321039779843
BaseRepresentation
bin10000111000101111…
…011100000010111010
31201210122020100022100
4100320233130002322
5244113222011142
612155112004230
71211216000664
oct207057340272
951718210270
1018131828922
117764a43489
123620390676
13192c63966c
14c40145534
15711c48b4c
hex438bdc0ba

18131828922 has 24 divisors (see below), whose sum is σ = 39667047264. Its totient is φ = 5985263304.

The previous prime is 18131828921. The next prime is 18131829013. The reversal of 18131828922 is 22982813181.

It is not an unprimeable number, because it can be changed into a prime (18131828921) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4888068 + ... + 4891775.

It is an arithmetic number, because the mean of its divisors is an integer number (1652793636).

Almost surely, 218131828922 is an apocalyptic number.

18131828922 is an abundant number, since it is smaller than the sum of its proper divisors (21535218342).

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

18131828922 is a wasteful number, since it uses less digits than its factorization.

18131828922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9779954 (or 9779951 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The spelling of 18131828922 in words is "eighteen billion, one hundred thirty-one million, eight hundred twenty-eight thousand, nine hundred twenty-two".

Divisors: 1 2 3 6 9 18 103 206 309 618 927 1854 9779843 19559686 29339529 58679058 88018587 176037174 1007323829 2014647658 3021971487 6043942974 9065914461 18131828922