18340674648 has 32 divisors (see below), whose sum is σ = 46970022960. Its totient is φ = 5964446720.

The previous prime is 18340674643. The next prime is 18340674659. The reversal of 18340674648 is 84647604381.

It is a self number, because there is not a number n which added to its sum of digits gives 18340674648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18340674643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9318465 + ... + 9320432.

Almost surely, 2^18340674648 is an apocalyptic number.

It is an amenable number.

18340674648 is an abundant number, since it is smaller than the sum of its proper divisors (28629348312).

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

18340674648 is a wasteful number, since it uses less digits than its factorization.

18340674648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18638947 (or 18638943 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 51.

The spelling of 18340674648 in words is "eighteen billion, three hundred forty million, six hundred seventy-four thousand, six hundred forty-eight".