33116189 has 2 divisors, whose sum is σ = 33116190. Its totient is φ = 33116188.

The previous prime is 33116143. The next prime is 33116191. The reversal of 33116189 is 98161133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17156164 + 15960025 = 4142^2 + 3995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33116189 is a prime.

It is a Sophie Germain prime.

Together with 33116191, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33116129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16558094 + 16558095.

It is an arithmetic number, because the mean of its divisors is an integer number (16558095).

Almost surely, 2^33116189 is an apocalyptic number.

It is an amenable number.

33116189 is a deficient number, since it is larger than the sum of its proper divisors (1).

33116189 is an equidigital number, since it uses as much as digits as its factorization.

33116189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 32.

The square root of 33116189 is about 5754.6667149367. Note that the first 3 decimals coincide. The cubic root of 33116189 is about 321.1294367092.

The spelling of 33116189 in words is "thirty-three million, one hundred sixteen thousand, one hundred eighty-nine".