18235965894 has 16 divisors (see below), whose sum is σ = 36474570480. Its totient is φ = 6078215520.

The previous prime is 18235965883. The next prime is 18235965929. The reversal of 18235965894 is 49856953281.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13609 + ... + 191460.

It is an arithmetic number, because the mean of its divisors is an integer number (2279660655).

Almost surely, 2^18235965894 is an apocalyptic number.

18235965894 is an abundant number, since it is smaller than the sum of its proper divisors (18238604586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18235965894 is a wasteful number, since it uses less digits than its factorization.

18235965894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219895.

The product of its digits is 18662400, while the sum is 60.

The spelling of 18235965894 in words is "eighteen billion, two hundred thirty-five million, nine hundred sixty-five thousand, eight hundred ninety-four".