1135191 has 16 divisors (see below), whose sum is σ = 1580544. Its totient is φ = 724224.

The previous prime is 1135187. The next prime is 1135201. The reversal of 1135191 is 1915311.

It is not a de Polignac number, because 1135191 - 2² = 1135187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135111) 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, 11655 + ... + 11751.

It is an arithmetic number, because the mean of its divisors is an integer number (98784).

2^1135191 is an apocalyptic number.

1135191 is a deficient number, since it is larger than the sum of its proper divisors (445353).

1135191 is an equidigital number, since it uses as much as digits as its factorization.

1135191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230.

The product of its digits is 135, while the sum is 21.

The square root of 1135191 is about 1065.4534246038. The cubic root of 1135191 is about 104.3172940488.

It can be divided in two parts, 1135 and 191, that added together give a triangular number (1326 = T₅₁).

The spelling of 1135191 in words is "one million, one hundred thirty-five thousand, one hundred ninety-one".