1812743180 has 24 divisors (see below), whose sum is σ = 3807620880. Its totient is φ = 724933440.

The previous prime is 1812743173. The next prime is 1812743221. The reversal of 1812743180 is 813472181.

It is a self number, because there is not a number n which added to its sum of digits gives 1812743180.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122375 + ... + 136385.

It is an arithmetic number, because the mean of its divisors is an integer number (158650870).

Almost surely, 2^1812743180 is an apocalyptic number.

1812743180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1812743180 is an abundant number, since it is smaller than the sum of its proper divisors (1994877700).

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

1812743180 is a wasteful number, since it uses less digits than its factorization.

1812743180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20489 (or 20487 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 1812743180 is about 42576.3218232858. The cubic root of 1812743180 is about 1219.3042660417.

The spelling of 1812743180 in words is "one billion, eight hundred twelve million, seven hundred forty-three thousand, one hundred eighty".