199920183 has 4 divisors (see below), whose sum is σ = 266560248. Its totient is φ = 133280120.

The previous prime is 199920173. The next prime is 199920197. The reversal of 199920183 is 381029991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 199920183 - 2⁵ = 199920151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199920173) 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, 33320028 + ... + 33320033.

It is an arithmetic number, because the mean of its divisors is an integer number (66640062).

Almost surely, 2^199920183 is an apocalyptic number.

199920183 is a deficient number, since it is larger than the sum of its proper divisors (66640065).

199920183 is an equidigital number, since it uses as much as digits as its factorization.

199920183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66640064.

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 199920183 is about 14139.3133850269. The cubic root of 199920183 is about 584.7257418500.

The spelling of 199920183 in words is "one hundred ninety-nine million, nine hundred twenty thousand, one hundred eighty-three".