185198183872 has 112 divisors (see below), whose sum is σ = 419622366240. Its totient is φ = 80338747392.

The previous prime is 185198183843. The next prime is 185198183893. The reversal of 185198183872 is 278381891581.

185198183872 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 185198183872.

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, 10868223 + ... + 10885249.

It is an arithmetic number, because the mean of its divisors is an integer number (3746628270).

Almost surely, 2^185198183872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 185198183872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209811183120).

185198183872 is an abundant number, since it is smaller than the sum of its proper divisors (234424182368).

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

185198183872 is a wasteful number, since it uses less digits than its factorization.

185198183872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17838 (or 17828 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 61.

The spelling of 185198183872 in words is "one hundred eighty-five billion, one hundred ninety-eight million, one hundred eighty-three thousand, eight hundred seventy-two".