18697414208 has 56 divisors (see below), whose sum is σ = 42605980320. Its totient is φ = 8051512320.

The previous prime is 18697414201. The next prime is 18697414231. The reversal of 18697414208 is 80241479681.

It is not an unprimeable number, because it can be changed into a prime (18697414201) 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, 685541 + ... + 712292.

Almost surely, 2^18697414208 is an apocalyptic number.

It is an amenable number.

18697414208 is an abundant number, since it is smaller than the sum of its proper divisors (23908566112).

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

18697414208 is a wasteful number, since it uses less digits than its factorization.

18697414208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397875 (or 1397865 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 18697414208 in words is "eighteen billion, six hundred ninety-seven million, four hundred fourteen thousand, two hundred eight".