199189180199 has 4 divisors (see below), whose sum is σ = 200232055680. Its totient is φ = 198146304720.

The previous prime is 199189180187. The next prime is 199189180219. The reversal of 199189180199 is 991081981991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 991081981991 = 101 ⋅9812692891.

It is a cyclic number.

It is not a de Polignac number, because 199189180199 - 2²⁴ = 199172402983 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 (199189180699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521437454 + ... + 521437835.

It is an arithmetic number, because the mean of its divisors is an integer number (50058013920).

Almost surely, 2^199189180199 is an apocalyptic number.

199189180199 is a deficient number, since it is larger than the sum of its proper divisors (1042875481).

199189180199 is a wasteful number, since it uses less digits than its factorization.

199189180199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042875480.

The product of its (nonzero) digits is 3779136, while the sum is 65.

The spelling of 199189180199 in words is "one hundred ninety-nine billion, one hundred eighty-nine million, one hundred eighty thousand, one hundred ninety-nine".