14509813 has 2 divisors, whose sum is σ = 14509814. Its totient is φ = 14509812.

The previous prime is 14509801. The next prime is 14509841. The reversal of 14509813 is 31890541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13965169 + 544644 = 3737^2 + 738^2 .

It is an emirp because it is prime and its reverse (31890541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14509813 - 2²¹ = 12412661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14509853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7254906 + 7254907.

It is an arithmetic number, because the mean of its divisors is an integer number (7254907).

Almost surely, 2^14509813 is an apocalyptic number.

It is an amenable number.

14509813 is a deficient number, since it is larger than the sum of its proper divisors (1).

14509813 is an equidigital number, since it uses as much as digits as its factorization.

14509813 is an evil number, because the sum of its binary digits is even.

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

The square root of 14509813 is about 3809.1748450288. The cubic root of 14509813 is about 243.9049448338.

The spelling of 14509813 in words is "fourteen million, five hundred nine thousand, eight hundred thirteen".