990163 has 2 divisors, whose sum is σ = 990164. Its totient is φ = 990162.

The previous prime is 990151. The next prime is 990169. The reversal of 990163 is 361099.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 990163 - 2¹⁷ = 859091 is a prime.

It is not a weakly prime, because it can be changed into another prime (990169) 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, 495081 + 495082.

It is an arithmetic number, because the mean of its divisors is an integer number (495082).

2⁹⁹⁰¹⁶³ is an apocalyptic number.

990163 is a deficient number, since it is larger than the sum of its proper divisors (1).

990163 is an equidigital number, since it uses as much as digits as its factorization.

990163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 990163 is about 995.0693443173. The cubic root of 990163 is about 99.6710189012.

The spelling of 990163 in words is "nine hundred ninety thousand, one hundred sixty-three".