14981509 has 2 divisors, whose sum is σ = 14981510. Its totient is φ = 14981508.

The previous prime is 14981507. The next prime is 14981531. The reversal of 14981509 is 90518941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14025025 + 956484 = 3745^2 + 978^2 .

It is a cyclic number.

It is not a de Polignac number, because 14981509 - 2¹ = 14981507 is a prime.

It is a super-2 number, since 2×14981509² = 448891223834162, which contains 22 as substring.

Together with 14981507, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14981507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7490754 + 7490755.

It is an arithmetic number, because the mean of its divisors is an integer number (7490755).

Almost surely, 2^14981509 is an apocalyptic number.

It is an amenable number.

14981509 is a deficient number, since it is larger than the sum of its proper divisors (1).

14981509 is an equidigital number, since it uses as much as digits as its factorization.

14981509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 14981509 is about 3870.5954322300. The cubic root of 14981509 is about 246.5198263687.

The spelling of 14981509 in words is "fourteen million, nine hundred eighty-one thousand, five hundred nine".