199189189933 has 4 divisors (see below), whose sum is σ = 199340206560. Its totient is φ = 199038173308.

The previous prime is 199189189921. The next prime is 199189189939. The reversal of 199189189933 is 339981981991.

199189189933 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 339981981991 = 269 ⋅1263873539.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199189189933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199189189939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75506335 + ... + 75508972.

It is an arithmetic number, because the mean of its divisors is an integer number (49835051640).

Almost surely, 2^199189189933 is an apocalyptic number.

It is an amenable number.

199189189933 is a deficient number, since it is larger than the sum of its proper divisors (151016627).

199189189933 is a wasteful number, since it uses less digits than its factorization.

199189189933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151016626.

The product of its digits is 34012224, while the sum is 70.

The spelling of 199189189933 in words is "one hundred ninety-nine billion, one hundred eighty-nine million, one hundred eighty-nine thousand, nine hundred thirty-three".