163310509 has 2 divisors, whose sum is σ = 163310510. Its totient is φ = 163310508.

The previous prime is 163310507. The next prime is 163310533. The reversal of 163310509 is 905013361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147549609 + 15760900 = 12147^2 + 3970^2 .

It is a cyclic number.

It is not a de Polignac number, because 163310509 - 2¹ = 163310507 is a prime.

Together with 163310507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163310507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81655254 + 81655255.

It is an arithmetic number, because the mean of its divisors is an integer number (81655255).

Almost surely, 2^163310509 is an apocalyptic number.

It is an amenable number.

163310509 is a deficient number, since it is larger than the sum of its proper divisors (1).

163310509 is an equidigital number, since it uses as much as digits as its factorization.

163310509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 163310509 is about 12779.3000199541. The cubic root of 163310509 is about 546.6022026818.

The spelling of 163310509 in words is "one hundred sixty-three million, three hundred ten thousand, five hundred nine".