810478823 has 16 divisors (see below), whose sum is σ = 1012919040. Its totient is φ = 630009600.

The previous prime is 810478793. The next prime is 810478829. The reversal of 810478823 is 328874018.

It is not a de Polignac number, because 810478823 - 2²⁰ = 809430247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810478829) 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 15 ways as a sum of consecutive naturals, for example, 19703 + ... + 44823.

It is an arithmetic number, because the mean of its divisors is an integer number (63307440).

Almost surely, 2^810478823 is an apocalyptic number.

810478823 is a deficient number, since it is larger than the sum of its proper divisors (202440217).

810478823 is a wasteful number, since it uses less digits than its factorization.

810478823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25558.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 810478823 is about 28468.9097613519. The cubic root of 810478823 is about 932.3533963933.

The spelling of 810478823 in words is "eight hundred ten million, four hundred seventy-eight thousand, eight hundred twenty-three".