11968819 has 2 divisors, whose sum is σ = 11968820. Its totient is φ = 11968818.

The previous prime is 11968777. The next prime is 11968823. The reversal of 11968819 is 91886911.

It is a happy number.

11968819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (91886911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11968819 - 2¹⁵ = 11936051 is a prime.

It is a super-2 number, since 2×11968819² = 286505256509522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11968829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5984409 + 5984410.

It is an arithmetic number, because the mean of its divisors is an integer number (5984410).

Almost surely, 2^11968819 is an apocalyptic number.

11968819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11968819 is an equidigital number, since it uses as much as digits as its factorization.

11968819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 43.

The square root of 11968819 is about 3459.5980980455. The cubic root of 11968819 is about 228.7443802057.

The spelling of 11968819 in words is "eleven million, nine hundred sixty-eight thousand, eight hundred nineteen".