1812315790 has 32 divisors (see below), whose sum is σ = 3316360320. Its totient is φ = 712963104.

The previous prime is 1812315773. The next prime is 1812315823. The reversal of 1812315790 is 975132181.

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, 183601 + ... + 193219.

It is an arithmetic number, because the mean of its divisors is an integer number (103636260).

Almost surely, 2^1812315790 is an apocalyptic number.

1812315790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1812315790 is a deficient number, since it is larger than the sum of its proper divisors (1504044530).

1812315790 is a wasteful number, since it uses less digits than its factorization.

1812315790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9936.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 1812315790 is about 42571.3024231113. The cubic root of 1812315790 is about 1219.2084334906.

The spelling of 1812315790 in words is "one billion, eight hundred twelve million, three hundred fifteen thousand, seven hundred ninety".