1813091056 has 20 divisors (see below), whose sum is σ = 4014701872. Its totient is φ = 777038976.

The previous prime is 1813091047. The next prime is 1813091069. The reversal of 1813091056 is 6501903181.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8094045 + ... + 8094268.

Almost surely, 2^1813091056 is an apocalyptic number.

1813091056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1813091056 is an abundant number, since it is smaller than the sum of its proper divisors (2201610816).

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

1813091056 is a wasteful number, since it uses less digits than its factorization.

1813091056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16188328 (or 16188322 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1813091056 is about 42580.4069496758. The cubic root of 1813091056 is about 1219.3822582554.

The spelling of 1813091056 in words is "one billion, eight hundred thirteen million, ninety-one thousand, fifty-six".