813294645 has 32 divisors (see below), whose sum is σ = 1329436800. Its totient is φ = 424437504.

The previous prime is 813294613. The next prime is 813294649. The reversal of 813294645 is 546492318.

813294645 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 813294645 - 2⁵ = 813294613 is a prime.

It is a super-2 number, since 2×813294645² = 1322896359171352050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 813294597 and 813294606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813294649) 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, 200659 + ... + 204671.

It is an arithmetic number, because the mean of its divisors is an integer number (41544900).

Almost surely, 2^813294645 is an apocalyptic number.

It is an amenable number.

813294645 is a deficient number, since it is larger than the sum of its proper divisors (516142155).

813294645 is a wasteful number, since it uses less digits than its factorization.

813294645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309.

The product of its digits is 207360, while the sum is 42.

The square root of 813294645 is about 28518.3212163690. The cubic root of 813294645 is about 933.4318973998.

The spelling of 813294645 in words is "eight hundred thirteen million, two hundred ninety-four thousand, six hundred forty-five".