6813450808 has 32 divisors (see below), whose sum is σ = 13544411760. Its totient is φ = 3202132480.

The previous prime is 6813450779. The next prime is 6813450811. The reversal of 6813450808 is 8080543186.

It is a super-2 number, since 2×6813450808² = 92846223826071705728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72723 + ... + 137533.

Almost surely, 2^6813450808 is an apocalyptic number.

6813450808 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6813450808 is a deficient number, since it is larger than the sum of its proper divisors (6730960952).

6813450808 is a wasteful number, since it uses less digits than its factorization.

6813450808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65607 (or 65603 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 6813450808 is about 82543.6297239224. The cubic root of 6813450808 is about 1895.7848205715.

The spelling of 6813450808 in words is "six billion, eight hundred thirteen million, four hundred fifty thousand, eight hundred eight".