813162444 has 24 divisors (see below), whose sum is σ = 1897840560. Its totient is φ = 270988224.

The previous prime is 813162439. The next prime is 813162481. The reversal of 813162444 is 444261318.

It is a super-2 number, since 2×813162444² = 1322466320664106272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89922 + ... + 98550.

It is an arithmetic number, because the mean of its divisors is an integer number (79076690).

Almost surely, 2^813162444 is an apocalyptic number.

It is an amenable number.

813162444 is an abundant number, since it is smaller than the sum of its proper divisors (1084678116).

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

813162444 is a wasteful number, since it uses less digits than its factorization.

813162444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16489 (or 16487 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 813162444 is about 28516.0032963948. The cubic root of 813162444 is about 933.3813182246.

The spelling of 813162444 in words is "eight hundred thirteen million, one hundred sixty-two thousand, four hundred forty-four".