14681809 has 2 divisors, whose sum is σ = 14681810. Its totient is φ = 14681808.

The previous prime is 14681773. The next prime is 14681827. The reversal of 14681809 is 90818641.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12446784 + 2235025 = 3528^2 + 1495^2 .

It is a cyclic number.

It is not a de Polignac number, because 14681809 - 2²³ = 6293201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14681839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7340904 + 7340905.

It is an arithmetic number, because the mean of its divisors is an integer number (7340905).

Almost surely, 2^14681809 is an apocalyptic number.

It is an amenable number.

14681809 is a deficient number, since it is larger than the sum of its proper divisors (1).

14681809 is an equidigital number, since it uses as much as digits as its factorization.

14681809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 14681809 is about 3831.6848774397. The cubic root of 14681809 is about 244.8648928826.

The spelling of 14681809 in words is "fourteen million, six hundred eighty-one thousand, eight hundred nine".