190686163 has 2 divisors, whose sum is σ = 190686164. Its totient is φ = 190686162.

The previous prime is 190686137. The next prime is 190686193. The reversal of 190686163 is 361686091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190686163 - 2⁵ = 190686131 is a prime.

It is a super-2 number, since 2×190686163² = 72722425519325138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (190686113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95343081 + 95343082.

It is an arithmetic number, because the mean of its divisors is an integer number (95343082).

Almost surely, 2^190686163 is an apocalyptic number.

190686163 is a deficient number, since it is larger than the sum of its proper divisors (1).

190686163 is an equidigital number, since it uses as much as digits as its factorization.

190686163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 190686163 is about 13808.9160689751. The cubic root of 190686163 is about 575.5809256813.

The spelling of 190686163 in words is "one hundred ninety million, six hundred eighty-six thousand, one hundred sixty-three".