813345741 has 24 divisors (see below), whose sum is σ = 1296070776. Its totient is φ = 488309760.

The previous prime is 813345737. The next prime is 813345751. The reversal of 813345741 is 147543318.

It is a happy number.

813345741 is a `hidden beast` number, since 81 + 3 + 3 + 4 + 574 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 43283241 + 770062500 = 6579^2 + 27750^2 .

It is not a de Polignac number, because 813345741 - 2² = 813345737 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 813345696 and 813345705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813345721) 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 23 ways as a sum of consecutive naturals, for example, 79980 + ... + 89573.

It is an arithmetic number, because the mean of its divisors is an integer number (54002949).

Almost surely, 2^813345741 is an apocalyptic number.

It is an amenable number.

813345741 is a deficient number, since it is larger than the sum of its proper divisors (482725035).

813345741 is a wasteful number, since it uses less digits than its factorization.

813345741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169613 (or 169610 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 813345741 is about 28519.2170474577. The cubic root of 813345741 is about 933.4514449023.

The spelling of 813345741 in words is "eight hundred thirteen million, three hundred forty-five thousand, seven hundred forty-one".