199482191 has 4 divisors (see below), whose sum is σ = 199563000. Its totient is φ = 199401384.

The previous prime is 199482167. The next prime is 199482193. The reversal of 199482191 is 191284991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 191284991 = 79 ⋅2421329.

It is a cyclic number.

It is not a de Polignac number, because 199482191 - 2¹⁴ = 199465807 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 (199482193) 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, 36581 + ... + 41678.

It is an arithmetic number, because the mean of its divisors is an integer number (49890750).

Almost surely, 2^199482191 is an apocalyptic number.

199482191 is a deficient number, since it is larger than the sum of its proper divisors (80809).

199482191 is an equidigital number, since it uses as much as digits as its factorization.

199482191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80808.

The product of its digits is 46656, while the sum is 44.

The square root of 199482191 is about 14123.8164459894. The cubic root of 199482191 is about 584.2984172226.

The spelling of 199482191 in words is "one hundred ninety-nine million, four hundred eighty-two thousand, one hundred ninety-one".