11819719 has 2 divisors, whose sum is σ = 11819720. Its totient is φ = 11819718.

The previous prime is 11819707. The next prime is 11819749. The reversal of 11819719 is 91791811.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11819719 is a prime.

It is a super-2 number, since 2×11819719² = 279411514477922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11819749) 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, 5909859 + 5909860.

It is an arithmetic number, because the mean of its divisors is an integer number (5909860).

Almost surely, 2^11819719 is an apocalyptic number.

11819719 is a deficient number, since it is larger than the sum of its proper divisors (1).

11819719 is an equidigital number, since it uses as much as digits as its factorization.

11819719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 37.

The square root of 11819719 is about 3437.9818207780. The cubic root of 11819719 is about 227.7905573811.

The spelling of 11819719 in words is "eleven million, eight hundred nineteen thousand, seven hundred nineteen".