14531809 has 2 divisors, whose sum is σ = 14531810. Its totient is φ = 14531808.

The previous prime is 14531773. The next prime is 14531819. The reversal of 14531809 is 90813541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14440000 + 91809 = 3800^2 + 303^2 .

It is a cyclic number.

It is not a de Polignac number, because 14531809 - 2⁷ = 14531681 is a prime.

It is a super-3 number, since 3×14531809³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (14531819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7265904 + 7265905.

It is an arithmetic number, because the mean of its divisors is an integer number (7265905).

Almost surely, 2^14531809 is an apocalyptic number.

It is an amenable number.

14531809 is a deficient number, since it is larger than the sum of its proper divisors (1).

14531809 is an equidigital number, since it uses as much as digits as its factorization.

14531809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 14531809 is about 3812.0609911175. The cubic root of 14531809 is about 244.0281309947.

The spelling of 14531809 in words is "fourteen million, five hundred thirty-one thousand, eight hundred nine".