185518480980 has 48 divisors (see below), whose sum is σ = 593659140480. Its totient is φ = 42404224128.

The previous prime is 185518480951. The next prime is 185518480993. The reversal of 185518480980 is 89084815581.

185518480980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (57) 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 185518480980.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220854915 + ... + 220855754.

It is an arithmetic number, because the mean of its divisors is an integer number (12367898760).

Almost surely, 2^185518480980 is an apocalyptic number.

185518480980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

185518480980 is an abundant number, since it is smaller than the sum of its proper divisors (408140659500).

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

185518480980 is a wasteful number, since it uses less digits than its factorization.

185518480980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441710688 (or 441710686 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 57.

The spelling of 185518480980 in words is "one hundred eighty-five billion, five hundred eighteen million, four hundred eighty thousand, nine hundred eighty".