11684819 has 2 divisors, whose sum is σ = 11684820. Its totient is φ = 11684818.

The previous prime is 11684749. The next prime is 11684821. The reversal of 11684819 is 91848611.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11684819 is a prime.

It is a super-2 number, since 2×11684819² = 273069990125522, which contains 22 as substring.

Together with 11684821, 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 (11684879) 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, 5842409 + 5842410.

It is an arithmetic number, because the mean of its divisors is an integer number (5842410).

Almost surely, 2^11684819 is an apocalyptic number.

11684819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11684819 is an equidigital number, since it uses as much as digits as its factorization.

11684819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 38.

The square root of 11684819 is about 3418.3064520315. The cubic root of 11684819 is about 226.9206382902.

The spelling of 11684819 in words is "eleven million, six hundred eighty-four thousand, eight hundred nineteen".