11386813 has 2 divisors, whose sum is σ = 11386814. Its totient is φ = 11386812.

The previous prime is 11386811. The next prime is 11386819. The reversal of 11386813 is 31868311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8139609 + 3247204 = 2853^2 + 1802^2 .

It is an emirp because it is prime and its reverse (31868311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11386813 - 2¹ = 11386811 is a prime.

Together with 11386811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11386811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5693406 + 5693407.

It is an arithmetic number, because the mean of its divisors is an integer number (5693407).

Almost surely, 2^11386813 is an apocalyptic number.

It is an amenable number.

11386813 is a deficient number, since it is larger than the sum of its proper divisors (1).

11386813 is an equidigital number, since it uses as much as digits as its factorization.

11386813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 11386813 is about 3374.4352120022. The cubic root of 11386813 is about 224.9748976110.

The spelling of 11386813 in words is "eleven million, three hundred eighty-six thousand, eight hundred thirteen".