1135891 has 2 divisors, whose sum is σ = 1135892. Its totient is φ = 1135890.

The previous prime is 1135879. The next prime is 1135903. The reversal of 1135891 is 1985311.

It is a balanced prime because it is at equal distance from previous prime (1135879) and next prime (1135903).

It is a cyclic number.

It is not a de Polignac number, because 1135891 - 2⁵ = 1135859 is a prime.

It is not a weakly prime, because it can be changed into another prime (1135831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567945 + 567946.

It is an arithmetic number, because the mean of its divisors is an integer number (567946).

2^1135891 is an apocalyptic number.

1135891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135891 is an equidigital number, since it uses as much as digits as its factorization.

1135891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 28.

The square root of 1135891 is about 1065.7818726175. The cubic root of 1135891 is about 104.3387315871.

It can be divided in two parts, 11358 and 91, that added together give a square (11449 = 107²).

The spelling of 1135891 in words is "one million, one hundred thirty-five thousand, eight hundred ninety-one".