158966189 has 2 divisors, whose sum is σ = 158966190. Its totient is φ = 158966188.

The previous prime is 158966177. The next prime is 158966191. The reversal of 158966189 is 981669851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90573289 + 68392900 = 9517^2 + 8270^2 .

It is an emirp because it is prime and its reverse (981669851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158966189 - 2¹² = 158962093 is a prime.

Together with 158966191, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158966189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158966149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79483094 + 79483095.

It is an arithmetic number, because the mean of its divisors is an integer number (79483095).

Almost surely, 2^158966189 is an apocalyptic number.

It is an amenable number.

158966189 is a deficient number, since it is larger than the sum of its proper divisors (1).

158966189 is an equidigital number, since it uses as much as digits as its factorization.

158966189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 53.

The square root of 158966189 is about 12608.1794482788. The cubic root of 158966189 is about 541.7117481164.

The spelling of 158966189 in words is "one hundred fifty-eight million, nine hundred sixty-six thousand, one hundred eighty-nine".