18028374108 has 12 divisors (see below), whose sum is σ = 42066206280. Its totient is φ = 6009458032.

The previous prime is 18028374103. The next prime is 18028374127. The reversal of 18028374108 is 80147382081.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18028374108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18028374103) 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, 751182243 + ... + 751182266.

It is an arithmetic number, because the mean of its divisors is an integer number (3505517190).

Almost surely, 2^18028374108 is an apocalyptic number.

It is an amenable number.

18028374108 is an abundant number, since it is smaller than the sum of its proper divisors (24037832172).

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

18028374108 is a wasteful number, since it uses less digits than its factorization.

18028374108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502364516 (or 1502364514 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The spelling of 18028374108 in words is "eighteen billion, twenty-eight million, three hundred seventy-four thousand, one hundred eight".