8135813 has 12 divisors (see below), whose sum is σ = 9876960. Its totient is φ = 6669432.

The previous prime is 8135801. The next prime is 8135821. The reversal of 8135813 is 3185318.

It is not a de Polignac number, because 8135813 - 2⁴ = 8135797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8135833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2483 + ... + 4736.

It is an arithmetic number, because the mean of its divisors is an integer number (823080).

Almost surely, 2^8135813 is an apocalyptic number.

It is an amenable number.

8135813 is a deficient number, since it is larger than the sum of its proper divisors (1741147).

8135813 is a wasteful number, since it uses less digits than its factorization.

8135813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7256 (or 7249 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 8135813 is about 2852.3346577847. The cubic root of 8135813 is about 201.1254301560.

The spelling of 8135813 in words is "eight million, one hundred thirty-five thousand, eight hundred thirteen".