199016149 has 4 divisors (see below), whose sum is σ = 199235520. Its totient is φ = 198796780.

The previous prime is 199016141. The next prime is 199016179. The reversal of 199016149 is 941610991.

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: 941610991 = 3181 ⋅296011.

It is a cyclic number.

It is not a de Polignac number, because 199016149 - 2³ = 199016141 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199016141) 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, 108319 + ... + 110140.

It is an arithmetic number, because the mean of its divisors is an integer number (49808880).

Almost surely, 2^199016149 is an apocalyptic number.

It is an amenable number.

199016149 is a deficient number, since it is larger than the sum of its proper divisors (219371).

199016149 is an equidigital number, since it uses as much as digits as its factorization.

199016149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219370.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 199016149 is about 14107.3083541829. The cubic root of 199016149 is about 583.8430383279.

The spelling of 199016149 in words is "one hundred ninety-nine million, sixteen thousand, one hundred forty-nine".