11917535849 has 2 divisors, whose sum is σ = 11917535850. Its totient is φ = 11917535848.

The previous prime is 11917535803. The next prime is 11917535867. The reversal of 11917535849 is 94853571911.

11917535849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7775712400 + 4141823449 = 88180^2 + 64357^2 .

It is a cyclic number.

It is not a de Polignac number, because 11917535849 - 2⁸ = 11917535593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11917535849.

It is not a weakly prime, because it can be changed into another prime (11917535249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5958767924 + 5958767925.

It is an arithmetic number, because the mean of its divisors is an integer number (5958767925).

Almost surely, 2^11917535849 is an apocalyptic number.

It is an amenable number.

11917535849 is a deficient number, since it is larger than the sum of its proper divisors (1).

11917535849 is an equidigital number, since it uses as much as digits as its factorization.

11917535849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 53.

The spelling of 11917535849 in words is "eleven billion, nine hundred seventeen million, five hundred thirty-five thousand, eight hundred forty-nine".