811580116 has 12 divisors (see below), whose sum is σ = 1482016032. Its totient is φ = 388146968.

The previous prime is 811580111. The next prime is 811580123. The reversal of 811580116 is 611085118.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811580111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4410670 + ... + 4410853.

It is an arithmetic number, because the mean of its divisors is an integer number (123501336).

Almost surely, 2^811580116 is an apocalyptic number.

It is an amenable number.

811580116 is a deficient number, since it is larger than the sum of its proper divisors (670435916).

811580116 is a wasteful number, since it uses less digits than its factorization.

811580116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8821550 (or 8821548 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 31.

The square root of 811580116 is about 28488.2452250046. The cubic root of 811580116 is about 932.7755047056.

The spelling of 811580116 in words is "eight hundred eleven million, five hundred eighty thousand, one hundred sixteen".