14385815309 has 2 divisors, whose sum is σ = 14385815310. Its totient is φ = 14385815308.

The previous prime is 14385815239. The next prime is 14385815317. The reversal of 14385815309 is 90351858341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9658565284 + 4727250025 = 98278^2 + 68755^2 .

It is a cyclic number.

It is not a de Polignac number, because 14385815309 - 2³² = 10090848013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14385811309) 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, 7192907654 + 7192907655.

It is an arithmetic number, because the mean of its divisors is an integer number (7192907655).

Almost surely, 2^14385815309 is an apocalyptic number.

It is an amenable number.

14385815309 is a deficient number, since it is larger than the sum of its proper divisors (1).

14385815309 is an equidigital number, since it uses as much as digits as its factorization.

14385815309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 14385815309 in words is "fourteen billion, three hundred eighty-five million, eight hundred fifteen thousand, three hundred nine".