11918827 has 2 divisors, whose sum is σ = 11918828. Its totient is φ = 11918826.

The previous prime is 11918821. The next prime is 11918839. The reversal of 11918827 is 72881911.

It is a weak prime.

It is an emirp because it is prime and its reverse (72881911) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11918827 is a prime.

It is not a weakly prime, because it can be changed into another prime (11918821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5959413 + 5959414.

It is an arithmetic number, because the mean of its divisors is an integer number (5959414).

Almost surely, 2^11918827 is an apocalyptic number.

11918827 is a deficient number, since it is larger than the sum of its proper divisors (1).

11918827 is an equidigital number, since it uses as much as digits as its factorization.

11918827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 37.

The square root of 11918827 is about 3452.3654209831. The cubic root of 11918827 is about 228.4254585305.

The spelling of 11918827 in words is "eleven million, nine hundred eighteen thousand, eight hundred twenty-seven".