989898163 has 2 divisors, whose sum is σ = 989898164. Its totient is φ = 989898162.

The previous prime is 989898149. The next prime is 989898197. The reversal of 989898163 is 361898989.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 989898163 - 2⁵ = 989898131 is a prime.

It is a super-2 number, since 2×989898163² = 1959796746221549138, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (989898113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494949081 + 494949082.

It is an arithmetic number, because the mean of its divisors is an integer number (494949082).

Almost surely, 2^989898163 is an apocalyptic number.

989898163 is a deficient number, since it is larger than the sum of its proper divisors (1).

989898163 is an equidigital number, since it uses as much as digits as its factorization.

989898163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6718464, while the sum is 61.

The square root of 989898163 is about 31462.6471073239. The cubic root of 989898163 is about 996.6213183669.

The spelling of 989898163 in words is "nine hundred eighty-nine million, eight hundred ninety-eight thousand, one hundred sixty-three".