811965850 has 24 divisors (see below), whose sum is σ = 1511385408. Its totient is φ = 324543600.

The previous prime is 811965827. The next prime is 811965887. The reversal of 811965850 is 58569118.

811965850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 811965797 and 811965806.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71247 + ... + 81853.

It is an arithmetic number, because the mean of its divisors is an integer number (62974392).

Almost surely, 2^811965850 is an apocalyptic number.

811965850 is a deficient number, since it is larger than the sum of its proper divisors (699419558).

811965850 is a wasteful number, since it uses less digits than its factorization.

811965850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12150 (or 12145 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 43.

The square root of 811965850 is about 28495.0144762202. The cubic root of 811965850 is about 932.9232601894.

The spelling of 811965850 in words is "eight hundred eleven million, nine hundred sixty-five thousand, eight hundred fifty".