6813057863 has 32 divisors (see below), whose sum is σ = 7349771520. Its totient is φ = 6305091840.

The previous prime is 6813057851. The next prime is 6813057871. The reversal of 6813057863 is 3687503186.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6813057863 - 2⁴ = 6813057847 is a prime.

It is a super-2 number, since 2×6813057863² = 92835514889172253538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6813057803) 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, 14588756 + ... + 14589222.

It is an arithmetic number, because the mean of its divisors is an integer number (229680360).

Almost surely, 2^6813057863 is an apocalyptic number.

6813057863 is a deficient number, since it is larger than the sum of its proper divisors (536713657).

6813057863 is a wasteful number, since it uses less digits than its factorization.

6813057863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 6813057863 is about 82541.2494635258. The cubic root of 6813057863 is about 1895.7483753346.

The spelling of 6813057863 in words is "six billion, eight hundred thirteen million, fifty-seven thousand, eight hundred sixty-three".