189834289 has 2 divisors, whose sum is σ = 189834290. Its totient is φ = 189834288.

The previous prime is 189834233. The next prime is 189834311. The reversal of 189834289 is 982438981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146603664 + 43230625 = 12108^2 + 6575^2 .

It is an emirp because it is prime and its reverse (982438981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189834289 - 2¹¹ = 189832241 is a prime.

It is not a weakly prime, because it can be changed into another prime (189834209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94917144 + 94917145.

It is an arithmetic number, because the mean of its divisors is an integer number (94917145).

Almost surely, 2^189834289 is an apocalyptic number.

It is an amenable number.

189834289 is a deficient number, since it is larger than the sum of its proper divisors (1).

189834289 is an equidigital number, since it uses as much as digits as its factorization.

189834289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 52.

The square root of 189834289 is about 13778.0364711377. The cubic root of 189834289 is about 574.7225267410.

The spelling of 189834289 in words is "one hundred eighty-nine million, eight hundred thirty-four thousand, two hundred eighty-nine".