158189 has 2 divisors, whose sum is σ = 158190. Its totient is φ = 158188.

The previous prime is 158161. The next prime is 158201. The reversal of 158189 is 981851.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133225 + 24964 = 365^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 158189 - 2⁸ = 157933 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158129) 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, 79094 + 79095.

It is an arithmetic number, because the mean of its divisors is an integer number (79095).

2¹⁵⁸¹⁸⁹ is an apocalyptic number.

It is an amenable number.

158189 is a deficient number, since it is larger than the sum of its proper divisors (1).

158189 is an equidigital number, since it uses as much as digits as its factorization.

158189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 32.

The square root of 158189 is about 397.7298077841. The cubic root of 158189 is about 54.0827492169.

The spelling of 158189 in words is "one hundred fifty-eight thousand, one hundred eighty-nine".