163999198 has 16 divisors (see below), whose sum is σ = 268930944. Its totient is φ = 74387160.

The previous prime is 163999169. The next prime is 163999201. The reversal of 163999198 is 891999361.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3061 + ... + 18367.

It is an arithmetic number, because the mean of its divisors is an integer number (16808184).

Almost surely, 2^163999198 is an apocalyptic number.

163999198 is a deficient number, since it is larger than the sum of its proper divisors (104931746).

163999198 is a wasteful number, since it uses less digits than its factorization.

163999198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15807.

The product of its digits is 944784, while the sum is 55.

The square root of 163999198 is about 12806.2171619882. The cubic root of 163999198 is about 547.3694752202.

The spelling of 163999198 in words is "one hundred sixty-three million, nine hundred ninety-nine thousand, one hundred ninety-eight".