11091109193 has 2 divisors, whose sum is σ = 11091109194. Its totient is φ = 11091109192.

The previous prime is 11091109187. The next prime is 11091109223. The reversal of 11091109193 is 39190119011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10298799289 + 792309904 = 101483^2 + 28148^2 .

It is a cyclic number.

It is not a de Polignac number, because 11091109193 - 2⁴ = 11091109177 is a prime.

It is a super-2 number, since 2×11091109193² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11091109163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5545554596 + 5545554597.

It is an arithmetic number, because the mean of its divisors is an integer number (5545554597).

Almost surely, 2^11091109193 is an apocalyptic number.

It is an amenable number.

11091109193 is a deficient number, since it is larger than the sum of its proper divisors (1).

11091109193 is an equidigital number, since it uses as much as digits as its factorization.

11091109193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2187, while the sum is 35.

The spelling of 11091109193 in words is "eleven billion, ninety-one million, one hundred nine thousand, one hundred ninety-three".