135136791 has 12 divisors (see below), whose sum is σ = 206680032. Its totient is φ = 84791616.

The previous prime is 135136787. The next prime is 135136801. The reversal of 135136791 is 197631531.

It is not a de Polignac number, because 135136791 - 2² = 135136787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135136711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 441471 + ... + 441776.

It is an arithmetic number, because the mean of its divisors is an integer number (17223336).

Almost surely, 2^135136791 is an apocalyptic number.

135136791 is a deficient number, since it is larger than the sum of its proper divisors (71543241).

135136791 is a wasteful number, since it uses less digits than its factorization.

135136791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883270 (or 883267 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 135136791 is about 11624.8350956046. The cubic root of 135136791 is about 513.1659916771.

The spelling of 135136791 in words is "one hundred thirty-five million, one hundred thirty-six thousand, seven hundred ninety-one".