13530986813 has 2 divisors, whose sum is σ = 13530986814. Its totient is φ = 13530986812.

The previous prime is 13530986767. The next prime is 13530986827. The reversal of 13530986813 is 31868903531.

13530986813 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., 13520573284 + 10413529 = 116278^2 + 3227^2 .

It is an emirp because it is prime and its reverse (31868903531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13530986813 - 2¹⁶ = 13530921277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13530986893) 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, 6765493406 + 6765493407.

It is an arithmetic number, because the mean of its divisors is an integer number (6765493407).

Almost surely, 2^13530986813 is an apocalyptic number.

It is an amenable number.

13530986813 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530986813 is an equidigital number, since it uses as much as digits as its factorization.

13530986813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 13530986813 in words is "thirteen billion, five hundred thirty million, nine hundred eighty-six thousand, eight hundred thirteen".