11914813 has 2 divisors, whose sum is σ = 11914814. Its totient is φ = 11914812.

The previous prime is 11914789. The next prime is 11914823. The reversal of 11914813 is 31841911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9018009 + 2896804 = 3003^2 + 1702^2 .

It is an emirp because it is prime and its reverse (31841911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11914813 - 2⁵ = 11914781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11914823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5957406 + 5957407.

It is an arithmetic number, because the mean of its divisors is an integer number (5957407).

Almost surely, 2^11914813 is an apocalyptic number.

It is an amenable number.

11914813 is a deficient number, since it is larger than the sum of its proper divisors (1).

11914813 is an equidigital number, since it uses as much as digits as its factorization.

11914813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 28.

The square root of 11914813 is about 3451.7840314829. The cubic root of 11914813 is about 228.3998127535.

The spelling of 11914813 in words is "eleven million, nine hundred fourteen thousand, eight hundred thirteen".