18788103899 has 8 divisors (see below), whose sum is σ = 19104190560. Its totient is φ = 18474350400.

The previous prime is 18788103881. The next prime is 18788103913. The reversal of 18788103899 is 99830188781.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18788103899 - 2²⁸ = 18519668443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18788100899) 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, 567047 + ... + 599264.

It is an arithmetic number, because the mean of its divisors is an integer number (2388023820).

Almost surely, 2^18788103899 is an apocalyptic number.

18788103899 is a deficient number, since it is larger than the sum of its proper divisors (316086661).

18788103899 is a wasteful number, since it uses less digits than its factorization.

18788103899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166581.

The product of its (nonzero) digits is 6967296, while the sum is 62.

The spelling of 18788103899 in words is "eighteen billion, seven hundred eighty-eight million, one hundred three thousand, eight hundred ninety-nine".