6842765309 has 2 divisors, whose sum is σ = 6842765310. Its totient is φ = 6842765308.

The previous prime is 6842765299. The next prime is 6842765329. The reversal of 6842765309 is 9035672486.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6816979225 + 25786084 = 82565^2 + 5078^2 .

It is a cyclic number.

It is not a de Polignac number, because 6842765309 - 2³² = 2547798013 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6842765329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3421382654 + 3421382655.

It is an arithmetic number, because the mean of its divisors is an integer number (3421382655).

Almost surely, 2^6842765309 is an apocalyptic number.

It is an amenable number.

6842765309 is a deficient number, since it is larger than the sum of its proper divisors (1).

6842765309 is an equidigital number, since it uses as much as digits as its factorization.

6842765309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The square root of 6842765309 is about 82721.0088731998. The cubic root of 6842765309 is about 1898.4997676272.

The spelling of 6842765309 in words is "six billion, eight hundred forty-two million, seven hundred sixty-five thousand, three hundred nine".