18558838604 has 6 divisors (see below), whose sum is σ = 32477967564. Its totient is φ = 9279419300.

The previous prime is 18558838583. The next prime is 18558838631. The reversal of 18558838604 is 40683885581.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18558838604.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2319854822 + ... + 2319854829.

It is an arithmetic number, because the mean of its divisors is an integer number (5412994594).

Almost surely, 2^18558838604 is an apocalyptic number.

It is an amenable number.

18558838604 is a deficient number, since it is larger than the sum of its proper divisors (13919128960).

18558838604 is a wasteful number, since it uses less digits than its factorization.

18558838604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4639709655 (or 4639709653 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 56.

The spelling of 18558838604 in words is "eighteen billion, five hundred fifty-eight million, eight hundred thirty-eight thousand, six hundred four".