6346921309 has 2 divisors, whose sum is σ = 6346921310. Its totient is φ = 6346921308.

The previous prime is 6346921213. The next prime is 6346921327. The reversal of 6346921309 is 9031296436.

6346921309 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6096174084 + 250747225 = 78078^2 + 15835^2 .

It is a cyclic number.

It is not a de Polignac number, because 6346921309 - 2⁷ = 6346921181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6346925309) by changing a digit.

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 as a sum of consecutive naturals, namely, 3173460654 + 3173460655.

It is an arithmetic number, because the mean of its divisors is an integer number (3173460655).

Almost surely, 2^6346921309 is an apocalyptic number.

It is an amenable number.

6346921309 is a deficient number, since it is larger than the sum of its proper divisors (1).

6346921309 is an equidigital number, since it uses as much as digits as its factorization.

6346921309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 6346921309 is about 79667.5674851442. The cubic root of 6346921309 is about 1851.4885812126.

The spelling of 6346921309 in words is "six billion, three hundred forty-six million, nine hundred twenty-one thousand, three hundred nine".