811773912 has 16 divisors (see below), whose sum is σ = 2029434840. Its totient is φ = 270591296.

The previous prime is 811773899. The next prime is 811773913. The reversal of 811773912 is 219377118.

811773912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811773913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16911933 + ... + 16911980.

Almost surely, 2^811773912 is an apocalyptic number.

It is an amenable number.

811773912 is an abundant number, since it is smaller than the sum of its proper divisors (1217660928).

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

811773912 is a wasteful number, since it uses less digits than its factorization.

811773912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33823922 (or 33823918 counting only the distinct ones).

The product of its digits is 21168, while the sum is 39.

The square root of 811773912 is about 28491.6463546774. The cubic root of 811773912 is about 932.8497441518.

The spelling of 811773912 in words is "eight hundred eleven million, seven hundred seventy-three thousand, nine hundred twelve".