199883045 has 4 divisors (see below), whose sum is σ = 239859660. Its totient is φ = 159906432.

The previous prime is 199883039. The next prime is 199883081. The reversal of 199883045 is 540388991.

It is a Cunningham number, because it is equal to 14138²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540388991 = 353 ⋅1530847.

It can be written as a sum of positive squares in 2 ways, for example, as 71944324 + 127938721 = 8482^2 + 11311^2 .

It is a cyclic number.

It is not a de Polignac number, because 199883045 - 2⁴ = 199883029 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19988300 + ... + 19988309.

It is an arithmetic number, because the mean of its divisors is an integer number (59964915).

Almost surely, 2^199883045 is an apocalyptic number.

It is an amenable number.

199883045 is a deficient number, since it is larger than the sum of its proper divisors (39976615).

199883045 is an equidigital number, since it uses as much as digits as its factorization.

199883045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39976614.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 199883045 is about 14138.0000353657. Note that the first 4 decimals coincide. The cubic root of 199883045 is about 584.6895325838.

The spelling of 199883045 in words is "one hundred ninety-nine million, eight hundred eighty-three thousand, forty-five".