18875437018 has 16 divisors (see below), whose sum is σ = 28636929000. Its totient is φ = 9329836032.

The previous prime is 18875437003. The next prime is 18875437027. The reversal of 18875437018 is 81073457881.

18875437018 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 17712149569 + 1163287449 = 133087^2 + 34107^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529818 + ... + 1542106.

Almost surely, 2^18875437018 is an apocalyptic number.

18875437018 is a deficient number, since it is larger than the sum of its proper divisors (9761491982).

18875437018 is a wasteful number, since it uses less digits than its factorization.

18875437018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21009.

The product of its (nonzero) digits is 1505280, while the sum is 52.

The spelling of 18875437018 in words is "eighteen billion, eight hundred seventy-five million, four hundred thirty-seven thousand, eighteen".