813002245 has 16 divisors (see below), whose sum is σ = 1084378752. Its totient is φ = 580116160.

The previous prime is 813002159. The next prime is 813002257. The reversal of 813002245 is 542200318.

It is not a de Polignac number, because 813002245 - 2⁹ = 813001733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136537 + ... + 142366.

It is an arithmetic number, because the mean of its divisors is an integer number (67773672).

Almost surely, 2^813002245 is an apocalyptic number.

It is an amenable number.

813002245 is a deficient number, since it is larger than the sum of its proper divisors (271376507).

813002245 is a wasteful number, since it uses less digits than its factorization.

813002245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278972.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 813002245 is about 28513.1942265331. The cubic root of 813002245 is about 933.3200198639.

The spelling of 813002245 in words is "eight hundred thirteen million, two thousand, two hundred forty-five".