810465945 has 32 divisors (see below), whose sum is σ = 1343682432. Its totient is φ = 416812032.

The previous prime is 810465941. The next prime is 810465967. The reversal of 810465945 is 549564018.

810465945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 810465945 - 2² = 810465941 is a prime.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 810465897 and 810465906.

It is not an unprimeable number, because it can be changed into a prime (810465941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56254 + ... + 69176.

It is an arithmetic number, because the mean of its divisors is an integer number (41990076).

Almost surely, 2^810465945 is an apocalyptic number.

It is an amenable number.

810465945 is a deficient number, since it is larger than the sum of its proper divisors (533216487).

810465945 is a wasteful number, since it uses less digits than its factorization.

810465945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13081.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 810465945 is about 28468.6835838962. The cubic root of 810465945 is about 932.3484581970.

The spelling of 810465945 in words is "eight hundred ten million, four hundred sixty-five thousand, nine hundred forty-five".