14728695409 has 2 divisors, whose sum is σ = 14728695410. Its totient is φ = 14728695408.

The previous prime is 14728695407. The next prime is 14728695431. The reversal of 14728695409 is 90459682741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13907013184 + 821682225 = 117928^2 + 28665^2 .

It is a cyclic number.

It is not a de Polignac number, because 14728695409 - 2¹ = 14728695407 is a prime.

Together with 14728695407, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 14728695409.

It is not a weakly prime, because it can be changed into another prime (14728695407) 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, 7364347704 + 7364347705.

It is an arithmetic number, because the mean of its divisors is an integer number (7364347705).

Almost surely, 2^14728695409 is an apocalyptic number.

It is an amenable number.

14728695409 is a deficient number, since it is larger than the sum of its proper divisors (1).

14728695409 is an equidigital number, since it uses as much as digits as its factorization.

14728695409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 14728695409 in words is "fourteen billion, seven hundred twenty-eight million, six hundred ninety-five thousand, four hundred nine".