18697693228 has 12 divisors (see below), whose sum is σ = 33058293352. Its totient is φ = 9252466560.

The previous prime is 18697693213. The next prime is 18697693277. The reversal of 18697693228 is 82239679681.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

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, 24094578 + ... + 24095353.

Almost surely, 2^18697693228 is an apocalyptic number.

It is an amenable number.

18697693228 is a deficient number, since it is larger than the sum of its proper divisors (14360600124).

18697693228 is a wasteful number, since it uses less digits than its factorization.

18697693228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48190032 (or 48190030 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 61.

The spelling of 18697693228 in words is "eighteen billion, six hundred ninety-seven million, six hundred ninety-three thousand, two hundred twenty-eight".