18774175216 has 30 divisors (see below), whose sum is σ = 38640542720. Its totient is φ = 8834903808.

The previous prime is 18774175193. The next prime is 18774175229. The reversal of 18774175216 is 61257147781.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18774175216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2025456 + ... + 2034703.

Almost surely, 2^18774175216 is an apocalyptic number.

18774175216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18774175216 is an abundant number, since it is smaller than the sum of its proper divisors (19866367504).

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

18774175216 is a wasteful number, since it uses less digits than its factorization.

18774175216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060201 (or 4060178 counting only the distinct ones).

The product of its digits is 658560, while the sum is 49.

The spelling of 18774175216 in words is "eighteen billion, seven hundred seventy-four million, one hundred seventy-five thousand, two hundred sixteen".