841628189 has 2 divisors, whose sum is σ = 841628190. Its totient is φ = 841628188.

The previous prime is 841628171. The next prime is 841628209. The reversal of 841628189 is 981826148.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 813219289 + 28408900 = 28517^2 + 5330^2 .

It is a cyclic number.

It is not a de Polignac number, because 841628189 - 2¹² = 841624093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (841628119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420814094 + 420814095.

It is an arithmetic number, because the mean of its divisors is an integer number (420814095).

Almost surely, 2^841628189 is an apocalyptic number.

It is an amenable number.

841628189 is a deficient number, since it is larger than the sum of its proper divisors (1).

841628189 is an equidigital number, since it uses as much as digits as its factorization.

841628189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 47.

The square root of 841628189 is about 29010.8288230447. The cubic root of 841628189 is about 944.1480293842.

The spelling of 841628189 in words is "eight hundred forty-one million, six hundred twenty-eight thousand, one hundred eighty-nine".