11838569 has 2 divisors, whose sum is σ = 11838570. Its totient is φ = 11838568.

The previous prime is 11838553. The next prime is 11838571. The reversal of 11838569 is 96583811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11812969 + 25600 = 3437^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 11838569 - 2⁴ = 11838553 is a prime.

It is a super-2 number, since 2×11838569² = 280303431935522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 11838571, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11838509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5919284 + 5919285.

It is an arithmetic number, because the mean of its divisors is an integer number (5919285).

Almost surely, 2^11838569 is an apocalyptic number.

It is an amenable number.

11838569 is a deficient number, since it is larger than the sum of its proper divisors (1).

11838569 is an equidigital number, since it uses as much as digits as its factorization.

11838569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 41.

The square root of 11838569 is about 3440.7221625699. The cubic root of 11838569 is about 227.9115859613.

The spelling of 11838569 in words is "eleven million, eight hundred thirty-eight thousand, five hundred sixty-nine".