133235189 has 2 divisors, whose sum is σ = 133235190. Its totient is φ = 133235188.

The previous prime is 133235131. The next prime is 133235231. The reversal of 133235189 is 981532331.

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., 71487025 + 61748164 = 8455^2 + 7858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133235189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133235129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66617594 + 66617595.

It is an arithmetic number, because the mean of its divisors is an integer number (66617595).

Almost surely, 2^133235189 is an apocalyptic number.

It is an amenable number.

133235189 is a deficient number, since it is larger than the sum of its proper divisors (1).

133235189 is an equidigital number, since it uses as much as digits as its factorization.

133235189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 35.

The square root of 133235189 is about 11542.7548271632. The cubic root of 133235189 is about 510.7475759470.

The spelling of 133235189 in words is "one hundred thirty-three million, two hundred thirty-five thousand, one hundred eighty-nine".