18700055199 has 40 divisors (see below), whose sum is σ = 33803291808. Its totient is φ = 10057167360.

The previous prime is 18700055191. The next prime is 18700055207. The reversal of 18700055199 is 99155000781.

18700055199 is a `hidden beast` number, since 1 + 8 + 7 + 0 + 0 + 0 + 551 + 99 = 666.

It is an interprime number because it is at equal distance from previous prime (18700055191) and next prime (18700055207).

It is not a de Polignac number, because 18700055199 - 2³ = 18700055191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18700055191) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 960382 + ... + 979659.

Almost surely, 2^18700055199 is an apocalyptic number.

18700055199 is a deficient number, since it is larger than the sum of its proper divisors (15103236609).

18700055199 is a wasteful number, since it uses less digits than its factorization.

18700055199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940077 (or 1940068 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 45.

The spelling of 18700055199 in words is "eighteen billion, seven hundred million, fifty-five thousand, one hundred ninety-nine".