135746591 has 2 divisors, whose sum is σ = 135746592. Its totient is φ = 135746590.

The previous prime is 135746579. The next prime is 135746641. The reversal of 135746591 is 195647531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135746591 - 2²² = 131552287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135746291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67873295 + 67873296.

It is an arithmetic number, because the mean of its divisors is an integer number (67873296).

Almost surely, 2^135746591 is an apocalyptic number.

135746591 is a deficient number, since it is larger than the sum of its proper divisors (1).

135746591 is an equidigital number, since it uses as much as digits as its factorization.

135746591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 41.

The square root of 135746591 is about 11651.0339026200. The cubic root of 135746591 is about 513.9367146922.

The spelling of 135746591 in words is "one hundred thirty-five million, seven hundred forty-six thousand, five hundred ninety-one".