6606818819 has 2 divisors, whose sum is σ = 6606818820. Its totient is φ = 6606818818.

The previous prime is 6606818789. The next prime is 6606818857. The reversal of 6606818819 is 9188186066.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6606818819 - 2²⁰ = 6605770243 is a prime.

It is a super-2 number, since 2×6606818819² = 87300109814185109522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6606815819) by changing a digit.

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 as a sum of consecutive naturals, namely, 3303409409 + 3303409410.

It is an arithmetic number, because the mean of its divisors is an integer number (3303409410).

Almost surely, 2^6606818819 is an apocalyptic number.

6606818819 is a deficient number, since it is larger than the sum of its proper divisors (1).

6606818819 is an equidigital number, since it uses as much as digits as its factorization.

6606818819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 53.

The square root of 6606818819 is about 81282.3401422474. The cubic root of 6606818819 is about 1876.4232222657.

The spelling of 6606818819 in words is "six billion, six hundred six million, eight hundred eighteen thousand, eight hundred nineteen".