135228189 has 8 divisors (see below), whose sum is σ = 186521760. Its totient is φ = 87043376.

The previous prime is 135228157. The next prime is 135228211. The reversal of 135228189 is 981822531.

135228189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135228189 - 2⁵ = 135228157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135228389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 777087 + ... + 777260.

It is an arithmetic number, because the mean of its divisors is an integer number (23315220).

Almost surely, 2^135228189 is an apocalyptic number.

It is an amenable number.

135228189 is a deficient number, since it is larger than the sum of its proper divisors (51293571).

135228189 is a wasteful number, since it uses less digits than its factorization.

135228189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554379.

The product of its digits is 34560, while the sum is 39.

The square root of 135228189 is about 11628.7655836722. The cubic root of 135228189 is about 513.2816566390.

The spelling of 135228189 in words is "one hundred thirty-five million, two hundred twenty-eight thousand, one hundred eighty-nine".