18498374864 has 40 divisors (see below), whose sum is σ = 37424455872. Its totient is φ = 8841000960.

The previous prime is 18498374857. The next prime is 18498374903. The reversal of 18498374864 is 46847389481.

It is a junction number, because it is equal to n+sod(n) for n = 18498374797 and 18498374806.

It is a congruent number.

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, 546992 + ... + 579824.

Almost surely, 2^18498374864 is an apocalyptic number.

It is an amenable number.

18498374864 is an abundant number, since it is smaller than the sum of its proper divisors (18926081008).

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

18498374864 is a wasteful number, since it uses less digits than its factorization.

18498374864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34395 (or 34389 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 62.

The spelling of 18498374864 in words is "eighteen billion, four hundred ninety-eight million, three hundred seventy-four thousand, eight hundred sixty-four".