18354703917 has 16 divisors (see below), whose sum is σ = 26892631872. Its totient is φ = 11042862720.

The previous prime is 18354703891. The next prime is 18354703921. The reversal of 18354703917 is 71930745381.

It is not a de Polignac number, because 18354703917 - 2⁶ = 18354703853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18354703967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2025418 + ... + 2034459.

It is an arithmetic number, because the mean of its divisors is an integer number (1680789492).

Almost surely, 2^18354703917 is an apocalyptic number.

It is an amenable number.

18354703917 is a deficient number, since it is larger than the sum of its proper divisors (8537927955).

18354703917 is a wasteful number, since it uses less digits than its factorization.

18354703917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060028.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 18354703917 in words is "eighteen billion, three hundred fifty-four million, seven hundred three thousand, nine hundred seventeen".