18584990064 has 60 divisors (see below), whose sum is σ = 52489379800. Its totient is φ = 6138156672.

The previous prime is 18584990063. The next prime is 18584990071. The reversal of 18584990064 is 46009948581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18584990063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 576334 + ... + 607725.

Almost surely, 2^18584990064 is an apocalyptic number.

It is an amenable number.

18584990064 is an abundant number, since it is smaller than the sum of its proper divisors (33904389736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18584990064 is a wasteful number, since it uses less digits than its factorization.

18584990064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184182 (or 1184173 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 18584990064 in words is "eighteen billion, five hundred eighty-four million, nine hundred ninety thousand, sixty-four".