8489664013 has 2 divisors, whose sum is σ = 8489664014. Its totient is φ = 8489664012.

The previous prime is 8489663993. The next prime is 8489664019. The reversal of 8489664013 is 3104669848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8402838889 + 86825124 = 91667^2 + 9318^2 .

It is a cyclic number.

It is not a de Polignac number, because 8489664013 - 2²¹ = 8487566861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8489664019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4244832006 + 4244832007.

It is an arithmetic number, because the mean of its divisors is an integer number (4244832007).

Almost surely, 2^8489664013 is an apocalyptic number.

It is an amenable number.

8489664013 is a deficient number, since it is larger than the sum of its proper divisors (1).

8489664013 is an equidigital number, since it uses as much as digits as its factorization.

8489664013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 49.

The square root of 8489664013 is about 92139.3727621368. The cubic root of 8489664013 is about 2040.0000010413. Note that the first 5 decimals are identical.

The spelling of 8489664013 in words is "eight billion, four hundred eighty-nine million, six hundred sixty-four thousand, thirteen".