11471819 has 2 divisors, whose sum is σ = 11471820. Its totient is φ = 11471818.

The previous prime is 11471771. The next prime is 11471851. The reversal of 11471819 is 91817411.

It is an a-pointer prime, because the next prime (11471851) can be obtained adding 11471819 to its sum of digits (32).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11471819 - 2⁸ = 11471563 is a prime.

It is a super-2 number, since 2×11471819² = 263205262337522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11471219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5735909 + 5735910.

It is an arithmetic number, because the mean of its divisors is an integer number (5735910).

Almost surely, 2^11471819 is an apocalyptic number.

11471819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11471819 is an equidigital number, since it uses as much as digits as its factorization.

11471819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 32.

The square root of 11471819 is about 3387.0073811552. The cubic root of 11471819 is about 225.5333454457.

The spelling of 11471819 in words is "eleven million, four hundred seventy-one thousand, eight hundred nineteen".