135748189 has 2 divisors, whose sum is σ = 135748190. Its totient is φ = 135748188.

The previous prime is 135748187. The next prime is 135748201. The reversal of 135748189 is 981847531.

It is a happy number.

135748189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134444025 + 1304164 = 11595^2 + 1142^2 .

It is a cyclic number.

It is not a de Polignac number, because 135748189 - 2¹ = 135748187 is a prime.

Together with 135748187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135748181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67874094 + 67874095.

It is an arithmetic number, because the mean of its divisors is an integer number (67874095).

Almost surely, 2^135748189 is an apocalyptic number.

It is an amenable number.

135748189 is a deficient number, since it is larger than the sum of its proper divisors (1).

135748189 is an equidigital number, since it uses as much as digits as its factorization.

135748189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 46.

The square root of 135748189 is about 11651.1024800231. The cubic root of 135748189 is about 513.9387313608.

The spelling of 135748189 in words is "one hundred thirty-five million, seven hundred forty-eight thousand, one hundred eighty-nine".