1812130860 has 48 divisors (see below), whose sum is σ = 5112721152. Its totient is φ = 479544000.

The previous prime is 1812130841. The next prime is 1812130867. The reversal of 1812130860 is 680312181.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1812130867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107416 + ... + 123135.

It is an arithmetic number, because the mean of its divisors is an integer number (106515024).

Almost surely, 2^1812130860 is an apocalyptic number.

1812130860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1812130860 is an abundant number, since it is smaller than the sum of its proper divisors (3300590292).

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

1812130860 is a wasteful number, since it uses less digits than its factorization.

1812130860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230694 (or 230692 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1812130860 is about 42569.1303646199. The cubic root of 1812130860 is about 1219.1669624463.

The spelling of 1812130860 in words is "one billion, eight hundred twelve million, one hundred thirty thousand, eight hundred sixty".