1095891 has 4 divisors (see below), whose sum is σ = 1461192. Its totient is φ = 730592.

The previous prime is 1095859. The next prime is 1095907. The reversal of 1095891 is 1985901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1095891 - 2⁵ = 1095859 is a prime.

It is a D-number.

1095891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1095811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182646 + ... + 182651.

It is an arithmetic number, because the mean of its divisors is an integer number (365298).

2^1095891 is an apocalyptic number.

1095891 is a deficient number, since it is larger than the sum of its proper divisors (365301).

1095891 is an equidigital number, since it uses as much as digits as its factorization.

1095891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365300.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 1095891 is about 1046.8481265207. The cubic root of 1095891 is about 103.0993166527.

The spelling of 1095891 in words is "one million, ninety-five thousand, eight hundred ninety-one".