10818609649 has 2 divisors, whose sum is σ = 10818609650. Its totient is φ = 10818609648.

The previous prime is 10818609643. The next prime is 10818609653. The reversal of 10818609649 is 94690681801.

10818609649 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., 7874787600 + 2943822049 = 88740^2 + 54257^2 .

It is a cyclic number.

It is not a de Polignac number, because 10818609649 - 2¹¹ = 10818607601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10818609596 and 10818609605.

It is not a weakly prime, because it can be changed into another prime (10818609643) 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, 5409304824 + 5409304825.

It is an arithmetic number, because the mean of its divisors is an integer number (5409304825).

Almost surely, 2^10818609649 is an apocalyptic number.

It is an amenable number.

10818609649 is a deficient number, since it is larger than the sum of its proper divisors (1).

10818609649 is an equidigital number, since it uses as much as digits as its factorization.

10818609649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 10818609649 in words is "ten billion, eight hundred eighteen million, six hundred nine thousand, six hundred forty-nine".