199973163 has 16 divisors (see below), whose sum is σ = 290106656. Its totient is φ = 121789440.

The previous prime is 199973143. The next prime is 199973173. The reversal of 199973163 is 361379991.

It is not a de Polignac number, because 199973163 - 2⁵ = 199973131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199973143) 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 in 15 ways as a sum of consecutive naturals, for example, 22648 + ... + 30213.

It is an arithmetic number, because the mean of its divisors is an integer number (18131666).

Almost surely, 2^199973163 is an apocalyptic number.

199973163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

199973163 is a deficient number, since it is larger than the sum of its proper divisors (90133493).

199973163 is a wasteful number, since it uses less digits than its factorization.

199973163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52974.

The product of its digits is 275562, while the sum is 48.

The square root of 199973163 is about 14141.1867606647. The cubic root of 199973163 is about 584.7773891845. Note that the first 3 decimals are identical.

The spelling of 199973163 in words is "one hundred ninety-nine million, nine hundred seventy-three thousand, one hundred sixty-three".