18118703113 has 4 divisors (see below), whose sum is σ = 20707089280. Its totient is φ = 15530316948.

The previous prime is 18118703089. The next prime is 18118703129. The reversal of 18118703113 is 31130781181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18118703113 - 2⁵ = 18118703081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18118703153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1294193073 + ... + 1294193086.

It is an arithmetic number, because the mean of its divisors is an integer number (5176772320).

Almost surely, 2^18118703113 is an apocalyptic number.

It is an amenable number.

18118703113 is a deficient number, since it is larger than the sum of its proper divisors (2588386167).

18118703113 is an equidigital number, since it uses as much as digits as its factorization.

18118703113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588386166.

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 18118703113 in words is "eighteen billion, one hundred eighteen million, seven hundred three thousand, one hundred thirteen".