18493997124 has 24 divisors (see below), whose sum is σ = 43168332928. Its totient is φ = 6162426720.

The previous prime is 18493997117. The next prime is 18493997129. The reversal of 18493997124 is 42179939481.

It is not an unprimeable number, because it can be changed into a prime (18493997129) 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, 245287 + ... + 311694.

Almost surely, 2^18493997124 is an apocalyptic number.

It is an amenable number.

18493997124 is an abundant number, since it is smaller than the sum of its proper divisors (24674335804).

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

18493997124 is a wasteful number, since it uses less digits than its factorization.

18493997124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559755 (or 559753 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 57.

The spelling of 18493997124 in words is "eighteen billion, four hundred ninety-three million, nine hundred ninety-seven thousand, one hundred twenty-four".