189081163 has 2 divisors, whose sum is σ = 189081164. Its totient is φ = 189081162.

The previous prime is 189081133. The next prime is 189081181. The reversal of 189081163 is 361180981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189081163 - 2⁹ = 189080651 is a prime.

It is not a weakly prime, because it can be changed into another prime (189081133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94540581 + 94540582.

It is an arithmetic number, because the mean of its divisors is an integer number (94540582).

Almost surely, 2^189081163 is an apocalyptic number.

189081163 is a deficient number, since it is larger than the sum of its proper divisors (1).

189081163 is an equidigital number, since it uses as much as digits as its factorization.

189081163 is an odious number, because the sum of its binary digits is odd.

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

The square root of 189081163 is about 13750.6786377982. The cubic root of 189081163 is about 573.9614908182.

The spelling of 189081163 in words is "one hundred eighty-nine million, eighty-one thousand, one hundred sixty-three".