14475131809 has 2 divisors, whose sum is σ = 14475131810. Its totient is φ = 14475131808.

The previous prime is 14475131807. The next prime is 14475131851. The reversal of 14475131809 is 90813157441.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14471368209 + 3763600 = 120297^2 + 1940^2 .

It is a cyclic number.

It is not a de Polignac number, because 14475131809 - 2¹ = 14475131807 is a prime.

It is a super-2 number, since 2×14475131809² (a number of 21 digits) contains 22 as substring.

Together with 14475131807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (14475131807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7237565904 + 7237565905.

It is an arithmetic number, because the mean of its divisors is an integer number (7237565905).

Almost surely, 2^14475131809 is an apocalyptic number.

It is an amenable number.

14475131809 is a deficient number, since it is larger than the sum of its proper divisors (1).

14475131809 is an equidigital number, since it uses as much as digits as its factorization.

14475131809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 14475131809 in words is "fourteen billion, four hundred seventy-five million, one hundred thirty-one thousand, eight hundred nine".