11819161 has 2 divisors, whose sum is σ = 11819162. Its totient is φ = 11819160.

The previous prime is 11819149. The next prime is 11819179. The reversal of 11819161 is 16191811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11689561 + 129600 = 3419^2 + 360^2 .

It is a cyclic number.

It is not a de Polignac number, because 11819161 - 2⁹ = 11818649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11814161) 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, 5909580 + 5909581.

It is an arithmetic number, because the mean of its divisors is an integer number (5909581).

Almost surely, 2^11819161 is an apocalyptic number.

It is an amenable number.

11819161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11819161 is an equidigital number, since it uses as much as digits as its factorization.

11819161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 28.

The square root of 11819161 is about 3437.9006675586. The cubic root of 11819161 is about 227.7869727180.

The spelling of 11819161 in words is "eleven million, eight hundred nineteen thousand, one hundred sixty-one".