18767868198 has 8 divisors (see below), whose sum is σ = 37535736408. Its totient is φ = 6255956064.

The previous prime is 18767868181. The next prime is 18767868209. The reversal of 18767868198 is 89186876781.

It is a sphenic number, since it is the product of 3 distinct primes.

18767868198 is an admirable number.

It is a congruent 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, 1563989011 + ... + 1563989022.

It is an arithmetic number, because the mean of its divisors is an integer number (4691967051).

Almost surely, 2^18767868198 is an apocalyptic number.

18767868198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18767868198 is a wasteful number, since it uses less digits than its factorization.

18767868198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127978038.

The product of its digits is 65028096, while the sum is 69.

The spelling of 18767868198 in words is "eighteen billion, seven hundred sixty-seven million, eight hundred sixty-eight thousand, one hundred ninety-eight".