135594191 has 2 divisors, whose sum is σ = 135594192. Its totient is φ = 135594190.

The previous prime is 135594181. The next prime is 135594209. The reversal of 135594191 is 191495531.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135594191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135594161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67797095 + 67797096.

It is an arithmetic number, because the mean of its divisors is an integer number (67797096).

Almost surely, 2^135594191 is an apocalyptic number.

135594191 is a deficient number, since it is larger than the sum of its proper divisors (1).

135594191 is an equidigital number, since it uses as much as digits as its factorization.

135594191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 38.

The square root of 135594191 is about 11644.4918738432. The cubic root of 135594191 is about 513.7443138274.

The spelling of 135594191 in words is "one hundred thirty-five million, five hundred ninety-four thousand, one hundred ninety-one".