18582020404 has 12 divisors (see below), whose sum is σ = 32766769728. Its totient is φ = 9220086200.

The previous prime is 18582020393. The next prime is 18582020423. The reversal of 18582020404 is 40402028581.

It is a self number, because there is not a number n which added to its sum of digits gives 18582020404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17730412 + ... + 17731459.

It is an arithmetic number, because the mean of its divisors is an integer number (2730564144).

Almost surely, 2^18582020404 is an apocalyptic number.

It is an amenable number.

18582020404 is a deficient number, since it is larger than the sum of its proper divisors (14184749324).

18582020404 is a wasteful number, since it uses less digits than its factorization.

18582020404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35462006 (or 35462004 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 34.

Adding to 18582020404 its reverse (40402028581), we get a palindrome (58984048985).

The spelling of 18582020404 in words is "eighteen billion, five hundred eighty-two million, twenty thousand, four hundred four".