998604163 has 2 divisors, whose sum is σ = 998604164. Its totient is φ = 998604162.

The previous prime is 998604149. The next prime is 998604169. The reversal of 998604163 is 361406899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998604163 - 2¹³ = 998595971 is a prime.

It is not a weakly prime, because it can be changed into another prime (998604169) 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, 499302081 + 499302082.

It is an arithmetic number, because the mean of its divisors is an integer number (499302082).

Almost surely, 2^998604163 is an apocalyptic number.

998604163 is a deficient number, since it is larger than the sum of its proper divisors (1).

998604163 is an equidigital number, since it uses as much as digits as its factorization.

998604163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 998604163 is about 31600.6987739195. The cubic root of 998604163 is about 999.5345043474.

The spelling of 998604163 in words is "nine hundred ninety-eight million, six hundred four thousand, one hundred sixty-three".