189445211 has 2 divisors, whose sum is σ = 189445212. Its totient is φ = 189445210.

The previous prime is 189445189. The next prime is 189445261. The reversal of 189445211 is 112544981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189445211 - 2¹⁰ = 189444187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (189445261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94722605 + 94722606.

It is an arithmetic number, because the mean of its divisors is an integer number (94722606).

Almost surely, 2^189445211 is an apocalyptic number.

189445211 is a deficient number, since it is larger than the sum of its proper divisors (1).

189445211 is an equidigital number, since it uses as much as digits as its factorization.

189445211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 35.

The square root of 189445211 is about 13763.9097279806. The cubic root of 189445211 is about 574.3296141718.

The spelling of 189445211 in words is "one hundred eighty-nine million, four hundred forty-five thousand, two hundred eleven".