813057746 has 16 divisors (see below), whose sum is σ = 1262525400. Its totient is φ = 392235648.

The previous prime is 813057743. The next prime is 813057761. The reversal of 813057746 is 647750318.

It can be written as a sum of positive squares in 4 ways, for example, as 438441721 + 374616025 = 20939^2 + 19355^2 .

It is a super-2 number, since 2×813057746² = 1322125796661201032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (813057743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96470 + ... + 104558.

Almost surely, 2^813057746 is an apocalyptic number.

813057746 is a deficient number, since it is larger than the sum of its proper divisors (449467654).

813057746 is a wasteful number, since it uses less digits than its factorization.

813057746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9853.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 813057746 is about 28514.1674611061. The cubic root of 813057746 is about 933.3412576141.

The spelling of 813057746 in words is "eight hundred thirteen million, fifty-seven thousand, seven hundred forty-six".