6813529916 has 12 divisors (see below), whose sum is σ = 11924257632. Its totient is φ = 3406599168.

The previous prime is 6813529901. The next prime is 6813529999. The reversal of 6813529916 is 6199253186.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127901 + ... + 173163.

It is an arithmetic number, because the mean of its divisors is an integer number (993688136).

Almost surely, 2^6813529916 is an apocalyptic number.

It is an amenable number.

6813529916 is a deficient number, since it is larger than the sum of its proper divisors (5110727716).

6813529916 is a wasteful number, since it uses less digits than its factorization.

6813529916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82900 (or 82898 counting only the distinct ones).

The product of its digits is 699840, while the sum is 50.

The square root of 6813529916 is about 82544.1089115389. The cubic root of 6813529916 is about 1895.7921575862.

The spelling of 6813529916 in words is "six billion, eight hundred thirteen million, five hundred twenty-nine thousand, nine hundred sixteen".