18480197864 has 16 divisors (see below), whose sum is σ = 34652990400. Its totient is φ = 9239400432.

The previous prime is 18480197851. The next prime is 18480197881. The reversal of 18480197864 is 46879108481.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35249 + ... + 195455.

It is an arithmetic number, because the mean of its divisors is an integer number (2165811900).

Almost surely, 2^18480197864 is an apocalyptic number.

It is an amenable number.

18480197864 is a deficient number, since it is larger than the sum of its proper divisors (16172792536).

18480197864 is a wasteful number, since it uses less digits than its factorization.

18480197864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174632 (or 174628 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 56.

The spelling of 18480197864 in words is "eighteen billion, four hundred eighty million, one hundred ninety-seven thousand, eight hundred sixty-four".