134961191 has 4 divisors (see below), whose sum is σ = 135401112. Its totient is φ = 134521272.

The previous prime is 134961187. The next prime is 134961227. The reversal of 134961191 is 191169431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 191169431 = 19 ⋅10061549.

It is a cyclic number.

It is not a de Polignac number, because 134961191 - 2² = 134961187 is a prime.

It is a super-2 number, since 2×134961191² = 36429046152276962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134961091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219500 + ... + 220113.

It is an arithmetic number, because the mean of its divisors is an integer number (33850278).

Almost surely, 2^134961191 is an apocalyptic number.

134961191 is a deficient number, since it is larger than the sum of its proper divisors (439921).

134961191 is an equidigital number, since it uses as much as digits as its factorization.

134961191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439920.

The product of its digits is 5832, while the sum is 35.

The square root of 134961191 is about 11617.2798451273. The cubic root of 134961191 is about 512.9436219166.

The spelling of 134961191 in words is "one hundred thirty-four million, nine hundred sixty-one thousand, one hundred ninety-one".