1108091 has 2 divisors, whose sum is σ = 1108092. Its totient is φ = 1108090.

The previous prime is 1108073. The next prime is 1108103. The reversal of 1108091 is 1908011.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1108091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1108001) 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 as a sum of consecutive naturals, namely, 554045 + 554046.

It is an arithmetic number, because the mean of its divisors is an integer number (554046).

2^1108091 is an apocalyptic number.

1108091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1108091 is an equidigital number, since it uses as much as digits as its factorization.

1108091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 1108091 is about 1052.6590141162. The cubic root of 1108091 is about 103.4804898385.

The spelling of 1108091 in words is "one million, one hundred eight thousand, ninety-one".