2819189 has 2 divisors, whose sum is σ = 2819190. Its totient is φ = 2819188.

The previous prime is 2819153. The next prime is 2819203. The reversal of 2819189 is 9819182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2748964 + 70225 = 1658^2 + 265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2819189 is a prime.

It is a Sophie Germain prime.

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 (2819149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1409594 + 1409595.

It is an arithmetic number, because the mean of its divisors is an integer number (1409595).

2^2819189 is an apocalyptic number.

It is an amenable number.

2819189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2819189 is an equidigital number, since it uses as much as digits as its factorization.

2819189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 38.

The square root of 2819189 is about 1679.0440732750. The cubic root of 2819189 is about 141.2672195573.

The spelling of 2819189 in words is "two million, eight hundred nineteen thousand, one hundred eighty-nine".