18658046804 has 12 divisors (see below), whose sum is σ = 32655211764. Its totient is φ = 9327986304.

The previous prime is 18658046791. The next prime is 18658046809. The reversal of 18658046804 is 40864085681.

It can be written as a sum of positive squares in 2 ways, for example, as 11924203204 + 6733843600 = 109198^2 + 82060^2 .

It is a super-2 number, since 2×18658046804² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18658046809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218069 + ... + 291324.

It is an arithmetic number, because the mean of its divisors is an integer number (2721267647).

Almost surely, 2^18658046804 is an apocalyptic number.

It is an amenable number.

18658046804 is a deficient number, since it is larger than the sum of its proper divisors (13997164960).

18658046804 is a wasteful number, since it uses less digits than its factorization.

18658046804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518554 (or 518552 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 50.

The spelling of 18658046804 in words is "eighteen billion, six hundred fifty-eight million, forty-six thousand, eight hundred four".