1091167 has 16 divisors (see below), whose sum is σ = 1400832. Its totient is φ = 825120.

The previous prime is 1091161. The next prime is 1091173. The reversal of 1091167 is 7611901.

It is an interprime number because it is at equal distance from previous prime (1091161) and next prime (1091173).

It is a cyclic number.

It is not a de Polignac number, because 1091167 - 2³ = 1091159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091161) 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 15 ways as a sum of consecutive naturals, for example, 2658 + ... + 3040.

It is an arithmetic number, because the mean of its divisors is an integer number (87552).

2^1091167 is an apocalyptic number.

1091167 is a deficient number, since it is larger than the sum of its proper divisors (309665).

1091167 is a wasteful number, since it uses less digits than its factorization.

1091167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 1091167 is about 1044.5893930153. The cubic root of 1091167 is about 102.9509616693.

The spelling of 1091167 in words is "one million, ninety-one thousand, one hundred sixty-seven".