1812975180 has 48 divisors (see below), whose sum is σ = 5184345600. Its totient is φ = 473172928.

The previous prime is 1812975167. The next prime is 1812975191. The reversal of 1812975180 is 815792181.

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, 318630 + ... + 324269.

It is an arithmetic number, because the mean of its divisors is an integer number (108007200).

Almost surely, 2^1812975180 is an apocalyptic number.

1812975180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1812975180 is an abundant number, since it is smaller than the sum of its proper divisors (3371370420).

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

1812975180 is a wasteful number, since it uses less digits than its factorization.

1812975180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642958 (or 642956 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 42.

The square root of 1812975180 is about 42579.0462551711. The cubic root of 1812975180 is about 1219.3562804925.

The spelling of 1812975180 in words is "one billion, eight hundred twelve million, nine hundred seventy-five thousand, one hundred eighty".