163165193 has 2 divisors, whose sum is σ = 163165194. Its totient is φ = 163165192.

The previous prime is 163165187. The next prime is 163165229. The reversal of 163165193 is 391561361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163123984 + 41209 = 12772^2 + 203^2 .

It is a cyclic number.

It is not a de Polignac number, because 163165193 - 2²⁴ = 146387977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (163365193) 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, 81582596 + 81582597.

It is an arithmetic number, because the mean of its divisors is an integer number (81582597).

Almost surely, 2^163165193 is an apocalyptic number.

It is an amenable number.

163165193 is a deficient number, since it is larger than the sum of its proper divisors (1).

163165193 is an equidigital number, since it uses as much as digits as its factorization.

163165193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 35.

The square root of 163165193 is about 12773.6131536852. The cubic root of 163165193 is about 546.4400297815.

The spelling of 163165193 in words is "one hundred sixty-three million, one hundred sixty-five thousand, one hundred ninety-three".