1168891 has 4 divisors (see below), whose sum is σ = 1176784. Its totient is φ = 1161000.

The previous prime is 1168879. The next prime is 1168897. The reversal of 1168891 is 1988611.

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 1168891 - 2⁵ = 1168859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1168897) 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, 3720 + ... + 4021.

It is an arithmetic number, because the mean of its divisors is an integer number (294196).

2^1168891 is an apocalyptic number.

1168891 is a deficient number, since it is larger than the sum of its proper divisors (7893).

1168891 is an equidigital number, since it uses as much as digits as its factorization.

1168891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7892.

The product of its digits is 3456, while the sum is 34.

The square root of 1168891 is about 1081.1526256732. The cubic root of 1168891 is about 105.3395207692.

The spelling of 1168891 in words is "one million, one hundred sixty-eight thousand, eight hundred ninety-one".