17968193 has 2 divisors, whose sum is σ = 17968194. Its totient is φ = 17968192.

The previous prime is 17968163. The next prime is 17968207. The reversal of 17968193 is 39186971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10195249 + 7772944 = 3193^2 + 2788^2 .

It is an emirp because it is prime and its reverse (39186971) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17968193 is a prime.

It is not a weakly prime, because it can be changed into another prime (17968103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8984096 + 8984097.

It is an arithmetic number, because the mean of its divisors is an integer number (8984097).

Almost surely, 2^17968193 is an apocalyptic number.

It is an amenable number.

17968193 is a deficient number, since it is larger than the sum of its proper divisors (1).

17968193 is an equidigital number, since it uses as much as digits as its factorization.

17968193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 44.

The square root of 17968193 is about 4238.8905388085. The cubic root of 17968193 is about 261.9196818854.

The spelling of 17968193 in words is "seventeen million, nine hundred sixty-eight thousand, one hundred ninety-three".