11822491 has 2 divisors, whose sum is σ = 11822492. Its totient is φ = 11822490.

The previous prime is 11822449. The next prime is 11822507. The reversal of 11822491 is 19422811.

11822491 is digitally balanced in base 3, 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 not a de Polignac number, because 11822491 - 2¹¹ = 11820443 is a prime.

It is not a weakly prime, because it can be changed into another prime (11822441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5911245 + 5911246.

It is an arithmetic number, because the mean of its divisors is an integer number (5911246).

Almost surely, 2^11822491 is an apocalyptic number.

11822491 is a deficient number, since it is larger than the sum of its proper divisors (1).

11822491 is an equidigital number, since it uses as much as digits as its factorization.

11822491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 28.

The square root of 11822491 is about 3438.3849406371. The cubic root of 11822491 is about 227.8083633901.

The spelling of 11822491 in words is "eleven million, eight hundred twenty-two thousand, four hundred ninety-one".