6813309940 has 24 divisors (see below), whose sum is σ = 15061001760. Its totient is φ = 2581885728.

The previous prime is 6813309917. The next prime is 6813310001. The reversal of 6813309940 is 499033186.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8964502 + ... + 8965261.

It is an arithmetic number, because the mean of its divisors is an integer number (627541740).

Almost surely, 2^6813309940 is an apocalyptic number.

It is an amenable number.

6813309940 is an abundant number, since it is smaller than the sum of its proper divisors (8247691820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6813309940 is a wasteful number, since it uses less digits than its factorization.

6813309940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17929791 (or 17929789 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 6813309940 is about 82542.7764253178. The cubic root of 6813309940 is about 1895.7717553733.

The spelling of 6813309940 in words is "six billion, eight hundred thirteen million, three hundred nine thousand, nine hundred forty".