18507086404 has 12 divisors (see below), whose sum is σ = 32391778300. Its totient is φ = 9252292608.

The previous prime is 18507086393. The next prime is 18507086441. The reversal of 18507086404 is 40468070581.

It can be written as a sum of positive squares in 2 ways, for example, as 14018086404 + 4489000000 = 118398^2 + 67000^2 .

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 3 ways as a sum of consecutive naturals, for example, 278949 + ... + 338860.

Almost surely, 2^18507086404 is an apocalyptic number.

It is an amenable number.

18507086404 is a deficient number, since it is larger than the sum of its proper divisors (13884691896).

18507086404 is a wasteful number, since it uses less digits than its factorization.

18507086404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625302 (or 625300 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 18507086404 in words is "eighteen billion, five hundred seven million, eighty-six thousand, four hundred four".