135967191 has 16 divisors (see below), whose sum is σ = 189547776. Its totient is φ = 86531456.

The previous prime is 135967177. The next prime is 135967199. The reversal of 135967191 is 191769531.

135967191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 135967191 - 2⁷ = 135967063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135967199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39256 + ... + 42578.

It is an arithmetic number, because the mean of its divisors is an integer number (11846736).

Almost surely, 2^135967191 is an apocalyptic number.

135967191 is a deficient number, since it is larger than the sum of its proper divisors (53580585).

135967191 is a wasteful number, since it uses less digits than its factorization.

135967191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942.

The product of its digits is 51030, while the sum is 42.

The square root of 135967191 is about 11660.4970305729. The cubic root of 135967191 is about 514.2149612873.

The spelling of 135967191 in words is "one hundred thirty-five million, nine hundred sixty-seven thousand, one hundred ninety-one".