9820189 has 2 divisors, whose sum is σ = 9820190. Its totient is φ = 9820188.

The previous prime is 9820163. The next prime is 9820199. The reversal of 9820189 is 9810289.

9820189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9703225 + 116964 = 3115^2 + 342^2 .

It is a cyclic number.

It is not a de Polignac number, because 9820189 - 2⁷ = 9820061 is a prime.

It is a super-2 number, since 2×9820189² = 192872223991442, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9820159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4910094 + 4910095.

It is an arithmetic number, because the mean of its divisors is an integer number (4910095).

Almost surely, 2^9820189 is an apocalyptic number.

It is an amenable number.

9820189 is a deficient number, since it is larger than the sum of its proper divisors (1).

9820189 is an equidigital number, since it uses as much as digits as its factorization.

9820189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 9820189 is about 3133.7180792152. The cubic root of 9820189 is about 214.1443475423.

The spelling of 9820189 in words is "nine million, eight hundred twenty thousand, one hundred eighty-nine".