18559907804 has 12 divisors (see below), whose sum is σ = 32519118744. Its totient is φ = 9268731024.

The previous prime is 18559907803. The next prime is 18559907833. The reversal of 18559907804 is 40870995581.

It is a self number, because there is not a number n which added to its sum of digits gives 18559907804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18559907803) by changing a digit.

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, 2801999 + ... + 2808614.

It is an arithmetic number, because the mean of its divisors is an integer number (2709926562).

Almost surely, 2^18559907804 is an apocalyptic number.

It is an amenable number.

18559907804 is a deficient number, since it is larger than the sum of its proper divisors (13959210940).

18559907804 is a wasteful number, since it uses less digits than its factorization.

18559907804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611444 (or 5611442 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 56.

The spelling of 18559907804 in words is "eighteen billion, five hundred fifty-nine million, nine hundred seven thousand, eight hundred four".