189782209 has 2 divisors, whose sum is σ = 189782210. Its totient is φ = 189782208.

The previous prime is 189782191. The next prime is 189782227. The reversal of 189782209 is 902287981.

It is a balanced prime because it is at equal distance from previous prime (189782191) and next prime (189782227).

It can be written as a sum of positive squares in only one way, i.e., 177023025 + 12759184 = 13305^2 + 3572^2 .

It is a cyclic number.

It is not a de Polignac number, because 189782209 - 2¹¹ = 189780161 is a prime.

It is not a weakly prime, because it can be changed into another prime (189782249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94891104 + 94891105.

It is an arithmetic number, because the mean of its divisors is an integer number (94891105).

Almost surely, 2^189782209 is an apocalyptic number.

It is an amenable number.

189782209 is a deficient number, since it is larger than the sum of its proper divisors (1).

189782209 is an equidigital number, since it uses as much as digits as its factorization.

189782209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 189782209 is about 13776.1463769808. The cubic root of 189782209 is about 574.6699646056.

The spelling of 189782209 in words is "one hundred eighty-nine million, seven hundred eighty-two thousand, two hundred nine".