18268109854 has 32 divisors (see below), whose sum is σ = 29438549280. Its totient is φ = 8475622272.

The previous prime is 18268109843. The next prime is 18268109869. The reversal of 18268109854 is 45890186281.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1227184 + ... + 1241980.

It is an arithmetic number, because the mean of its divisors is an integer number (919954665).

Almost surely, 2^18268109854 is an apocalyptic number.

18268109854 is a deficient number, since it is larger than the sum of its proper divisors (11170439426).

18268109854 is a wasteful number, since it uses less digits than its factorization.

18268109854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15484.

The product of its (nonzero) digits is 1105920, while the sum is 52.

The spelling of 18268109854 in words is "eighteen billion, two hundred sixty-eight million, one hundred nine thousand, eight hundred fifty-four".