189041189 has 2 divisors, whose sum is σ = 189041190. Its totient is φ = 189041188.

The previous prime is 189041179. The next prime is 189041197. The reversal of 189041189 is 981140981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124768900 + 64272289 = 11170^2 + 8017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189041189 is a prime.

It is a super-2 number, since 2×189041189² = 71473142277067442, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189041159) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94520594 + 94520595.

It is an arithmetic number, because the mean of its divisors is an integer number (94520595).

Almost surely, 2^189041189 is an apocalyptic number.

It is an amenable number.

189041189 is a deficient number, since it is larger than the sum of its proper divisors (1).

189041189 is an equidigital number, since it uses as much as digits as its factorization.

189041189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 41.

The square root of 189041189 is about 13749.2250327064. The cubic root of 189041189 is about 573.9210405457.

The spelling of 189041189 in words is "one hundred eighty-nine million, forty-one thousand, one hundred eighty-nine".