18674324544 has 56 divisors (see below), whose sum is σ = 49420402048. Its totient is φ = 6223357440.

The previous prime is 18674324507. The next prime is 18674324561. The reversal of 18674324544 is 44542347681.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 18674324493 and 18674324502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1151049 + ... + 1167159.

Almost surely, 2^18674324544 is an apocalyptic number.

It is an amenable number.

18674324544 is an abundant number, since it is smaller than the sum of its proper divisors (30746077504).

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

18674324544 is a wasteful number, since it uses less digits than its factorization.

18674324544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22163 (or 22153 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 48.

The spelling of 18674324544 in words is "eighteen billion, six hundred seventy-four million, three hundred twenty-four thousand, five hundred forty-four".