11818091 has 2 divisors, whose sum is σ = 11818092. Its totient is φ = 11818090.

The previous prime is 11818073. The next prime is 11818097. The reversal of 11818091 is 19081811.

11818091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11818091 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11818097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5909045 + 5909046.

It is an arithmetic number, because the mean of its divisors is an integer number (5909046).

Almost surely, 2^11818091 is an apocalyptic number.

11818091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11818091 is an equidigital number, since it uses as much as digits as its factorization.

11818091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 29.

The square root of 11818091 is about 3437.7450458113. The cubic root of 11818091 is about 227.7800985861.

The spelling of 11818091 in words is "eleven million, eight hundred eighteen thousand, ninety-one".