18870875828 has 24 divisors (see below), whose sum is σ = 37745400000. Its totient is φ = 8086736448.

The previous prime is 18870875801. The next prime is 18870875831. The reversal of 18870875828 is 82857807881.

It is a super-2 number, since 2×18870875828² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 335048 + ... + 387296.

It is an arithmetic number, because the mean of its divisors is an integer number (1572725000).

Almost surely, 2^18870875828 is an apocalyptic number.

It is an amenable number.

18870875828 is an abundant number, since it is smaller than the sum of its proper divisors (18874524172).

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

18870875828 is a wasteful number, since it uses less digits than its factorization.

18870875828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65159 (or 65157 counting only the distinct ones).

The product of its (nonzero) digits is 16056320, while the sum is 62.

The spelling of 18870875828 in words is "eighteen billion, eight hundred seventy million, eight hundred seventy-five thousand, eight hundred twenty-eight".