168190193 has 2 divisors, whose sum is σ = 168190194. Its totient is φ = 168190192.

The previous prime is 168190181. The next prime is 168190219. The reversal of 168190193 is 391091861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162511504 + 5678689 = 12748^2 + 2383^2 .

It is a cyclic number.

It is not a de Polignac number, because 168190193 - 2¹⁰ = 168189169 is a prime.

It is not a weakly prime, because it can be changed into another prime (168190133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84095096 + 84095097.

It is an arithmetic number, because the mean of its divisors is an integer number (84095097).

Almost surely, 2^168190193 is an apocalyptic number.

It is an amenable number.

168190193 is a deficient number, since it is larger than the sum of its proper divisors (1).

168190193 is an equidigital number, since it uses as much as digits as its factorization.

168190193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 168190193 is about 12968.8161757348. The cubic root of 168190193 is about 551.9929821712.

The spelling of 168190193 in words is "one hundred sixty-eight million, one hundred ninety thousand, one hundred ninety-three".