11823686389 has 2 divisors, whose sum is σ = 11823686390. Its totient is φ = 11823686388.

The previous prime is 11823686387. The next prime is 11823686431. The reversal of 11823686389 is 98368632811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11613726289 + 209960100 = 107767^2 + 14490^2 .

It is an emirp because it is prime and its reverse (98368632811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11823686389 - 2¹ = 11823686387 is a prime.

Together with 11823686387, 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 (11823686387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5911843194 + 5911843195.

It is an arithmetic number, because the mean of its divisors is an integer number (5911843195).

Almost surely, 2^11823686389 is an apocalyptic number.

It is an amenable number.

11823686389 is a deficient number, since it is larger than the sum of its proper divisors (1).

11823686389 is an equidigital number, since it uses as much as digits as its factorization.

11823686389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 55.

The spelling of 11823686389 in words is "eleven billion, eight hundred twenty-three million, six hundred eighty-six thousand, three hundred eighty-nine".