11189819 has 2 divisors, whose sum is σ = 11189820. Its totient is φ = 11189818.

The previous prime is 11189777. The next prime is 11189821. The reversal of 11189819 is 91898111.

It is a strong prime.

It is an emirp because it is prime and its reverse (91898111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11189819 - 2¹² = 11185723 is a prime.

It is a super-2 number, since 2×11189819² = 250424098505522, which contains 22 as substring.

Together with 11189821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11189839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5594909 + 5594910.

It is an arithmetic number, because the mean of its divisors is an integer number (5594910).

Almost surely, 2^11189819 is an apocalyptic number.

11189819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11189819 is an equidigital number, since it uses as much as digits as its factorization.

11189819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 38.

The square root of 11189819 is about 3345.1186824984. The cubic root of 11189819 is about 223.6699739823.

The spelling of 11189819 in words is "eleven million, one hundred eighty-nine thousand, eight hundred nineteen".