18522959028 has 48 divisors (see below), whose sum is σ = 50402620800. Its totient is φ = 5292272832.

The previous prime is 18522959011. The next prime is 18522959041. The reversal of 18522959028 is 82095922581.

It is a super-2 number, since 2×18522959028² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2246001 + ... + 2254232.

It is an arithmetic number, because the mean of its divisors is an integer number (1050054600).

Almost surely, 2^18522959028 is an apocalyptic number.

It is an amenable number.

18522959028 is an abundant number, since it is smaller than the sum of its proper divisors (31879661772).

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

18522959028 is a wasteful number, since it uses less digits than its factorization.

18522959028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500261 (or 4500245 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 51.

The spelling of 18522959028 in words is "eighteen billion, five hundred twenty-two million, nine hundred fifty-nine thousand, twenty-eight".