14691649909 has 2 divisors, whose sum is σ = 14691649910. Its totient is φ = 14691649908.

The previous prime is 14691649871. The next prime is 14691649939. The reversal of 14691649909 is 90994619641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11384249809 + 3307400100 = 106697^2 + 57510^2 .

It is a cyclic number.

It is not a de Polignac number, because 14691649909 - 2³³ = 6101715317 is a prime.

It is a super-3 number, since 3×14691649909³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14691649939) 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, 7345824954 + 7345824955.

It is an arithmetic number, because the mean of its divisors is an integer number (7345824955).

Almost surely, 2^14691649909 is an apocalyptic number.

It is an amenable number.

14691649909 is a deficient number, since it is larger than the sum of its proper divisors (1).

14691649909 is an equidigital number, since it uses as much as digits as its factorization.

14691649909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3779136, while the sum is 58.

The spelling of 14691649909 in words is "fourteen billion, six hundred ninety-one million, six hundred forty-nine thousand, nine hundred nine".