18875459432 has 32 divisors (see below), whose sum is σ = 36378451080. Its totient is φ = 9177692160.

The previous prime is 18875459429. The next prime is 18875459443. The reversal of 18875459432 is 23495457881.

It can be written as a sum of positive squares in 4 ways, for example, as 9317268676 + 9558190756 = 96526^2 + 97766^2 .

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, 149069 + ... + 244892.

Almost surely, 2^18875459432 is an apocalyptic number.

It is an amenable number.

18875459432 is a deficient number, since it is larger than the sum of its proper divisors (17502991648).

18875459432 is a wasteful number, since it uses less digits than its factorization.

18875459432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394133 (or 394129 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 56.

The spelling of 18875459432 in words is "eighteen billion, eight hundred seventy-five million, four hundred fifty-nine thousand, four hundred thirty-two".