1813805682 has 24 divisors (see below), whose sum is σ = 3928125744. Its totient is φ = 558093744.

The previous prime is 1813805681. The next prime is 1813805687. The reversal of 1813805682 is 2865083181.

1813805682 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1813805681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 893368 + ... + 895395.

It is an arithmetic number, because the mean of its divisors is an integer number (163671906).

Almost surely, 2^1813805682 is an apocalyptic number.

1813805682 is an abundant number, since it is smaller than the sum of its proper divisors (2114320062).

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

1813805682 is a wasteful number, since it uses less digits than its factorization.

1813805682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788794 (or 1788781 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 1813805682 is about 42588.7976115786. The cubic root of 1813805682 is about 1219.5424428567.

The spelling of 1813805682 in words is "one billion, eight hundred thirteen million, eight hundred five thousand, six hundred eighty-two".