198632123193 has 16 divisors (see below), whose sum is σ = 302691608576. Its totient is φ = 113498787600.

The previous prime is 198632123161. The next prime is 198632123237. The reversal of 198632123193 is 391321236891.

It is not a de Polignac number, because 198632123193 - 2⁵ = 198632123161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198632123113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266880 + ... + 684462.

It is an arithmetic number, because the mean of its divisors is an integer number (18918225536).

Almost surely, 2^198632123193 is an apocalyptic number.

It is an amenable number.

198632123193 is a deficient number, since it is larger than the sum of its proper divisors (104059485383).

198632123193 is a wasteful number, since it uses less digits than its factorization.

198632123193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440244.

The product of its digits is 419904, while the sum is 48.

The spelling of 198632123193 in words is "one hundred ninety-eight billion, six hundred thirty-two million, one hundred twenty-three thousand, one hundred ninety-three".