163326613 has 2 divisors, whose sum is σ = 163326614. Its totient is φ = 163326612.

The previous prime is 163326589. The next prime is 163326649. The reversal of 163326613 is 316623361.

163326613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139287204 + 24039409 = 11802^2 + 4903^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163326613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163326673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81663306 + 81663307.

It is an arithmetic number, because the mean of its divisors is an integer number (81663307).

Almost surely, 2^163326613 is an apocalyptic number.

It is an amenable number.

163326613 is a deficient number, since it is larger than the sum of its proper divisors (1).

163326613 is an equidigital number, since it uses as much as digits as its factorization.

163326613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 31.

The square root of 163326613 is about 12779.9300858808. The cubic root of 163326613 is about 546.6201688507.

Adding to 163326613 its reverse (316623361), we get a palindrome (479949974).

The spelling of 163326613 in words is "one hundred sixty-three million, three hundred twenty-six thousand, six hundred thirteen".