163328393 has 2 divisors, whose sum is σ = 163328394. Its totient is φ = 163328392.

The previous prime is 163328387. The next prime is 163328411. The reversal of 163328393 is 393823361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112105744 + 51222649 = 10588^2 + 7157^2 .

It is a cyclic number.

It is not a de Polignac number, because 163328393 - 2¹⁰ = 163327369 is a prime.

It is not a weakly prime, because it can be changed into another prime (163328303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81664196 + 81664197.

It is an arithmetic number, because the mean of its divisors is an integer number (81664197).

Almost surely, 2^163328393 is an apocalyptic number.

It is an amenable number.

163328393 is a deficient number, since it is larger than the sum of its proper divisors (1).

163328393 is an equidigital number, since it uses as much as digits as its factorization.

163328393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 38.

The square root of 163328393 is about 12779.9997261346. Note that the first 3 decimals coincide. The cubic root of 163328393 is about 546.6221546066.

The spelling of 163328393 in words is "one hundred sixty-three million, three hundred twenty-eight thousand, three hundred ninety-three".