6819809219 has 2 divisors, whose sum is σ = 6819809220. Its totient is φ = 6819809218.

The previous prime is 6819809203. The next prime is 6819809239. The reversal of 6819809219 is 9129089186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6819809219 - 2⁴ = 6819809203 is a prime.

It is a super-2 number, since 2×6819809219² = 93019595567114779922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6819809239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3409904609 + 3409904610.

It is an arithmetic number, because the mean of its divisors is an integer number (3409904610).

Almost surely, 2^6819809219 is an apocalyptic number.

6819809219 is a deficient number, since it is larger than the sum of its proper divisors (1).

6819809219 is an equidigital number, since it uses as much as digits as its factorization.

6819809219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 53.

The square root of 6819809219 is about 82582.1361978485. The cubic root of 6819809219 is about 1896.3743618396.

The spelling of 6819809219 in words is "six billion, eight hundred nineteen million, eight hundred nine thousand, two hundred nineteen".