158206189 has 2 divisors, whose sum is σ = 158206190. Its totient is φ = 158206188.

The previous prime is 158206109. The next prime is 158206201. The reversal of 158206189 is 981602851.

158206189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152646025 + 5560164 = 12355^2 + 2358^2 .

It is an emirp because it is prime and its reverse (981602851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158206189 - 2¹³ = 158197997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158206109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79103094 + 79103095.

It is an arithmetic number, because the mean of its divisors is an integer number (79103095).

Almost surely, 2^158206189 is an apocalyptic number.

It is an amenable number.

158206189 is a deficient number, since it is larger than the sum of its proper divisors (1).

158206189 is an equidigital number, since it uses as much as digits as its factorization.

158206189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 158206189 is about 12578.0041739538. The cubic root of 158206189 is about 540.8470804399.

The spelling of 158206189 in words is "one hundred fifty-eight million, two hundred six thousand, one hundred eighty-nine".