18875195920 has 60 divisors (see below), whose sum is σ = 51049711404. Its totient is φ = 6471494400.

The previous prime is 18875195881. The next prime is 18875195921. The reversal of 18875195920 is 2959157881.

It can be written as a sum of positive squares in 2 ways, for example, as 3447568656 + 15427627264 = 58716^2 + 124208^2 .

It is not an unprimeable number, because it can be changed into a prime (18875195921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2403631 + ... + 2411470.

Almost surely, 2^18875195920 is an apocalyptic number.

18875195920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18875195920 is an abundant number, since it is smaller than the sum of its proper divisors (32174515484).

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

18875195920 is a wasteful number, since it uses less digits than its factorization.

18875195920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815128 (or 4815115 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 55.

The spelling of 18875195920 in words is "eighteen billion, eight hundred seventy-five million, one hundred ninety-five thousand, nine hundred twenty".