8643264169 has 2 divisors, whose sum is σ = 8643264170. Its totient is φ = 8643264168.

The previous prime is 8643264143. The next prime is 8643264193. The reversal of 8643264169 is 9614623468.

8643264169 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., 7597388569 + 1045875600 = 87163^2 + 32340^2 .

It is a cyclic number.

It is not a de Polignac number, because 8643264169 - 2⁷ = 8643264041 is a prime.

It is a super-2 number, since 2×8643264169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8643214169) 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, 4321632084 + 4321632085.

It is an arithmetic number, because the mean of its divisors is an integer number (4321632085).

Almost surely, 2^8643264169 is an apocalyptic number.

It is an amenable number.

8643264169 is a deficient number, since it is larger than the sum of its proper divisors (1).

8643264169 is an equidigital number, since it uses as much as digits as its factorization.

8643264169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 49.

The square root of 8643264169 is about 92969.1570844869. The cubic root of 8643264169 is about 2052.2295132209.

The spelling of 8643264169 in words is "eight billion, six hundred forty-three million, two hundred sixty-four thousand, one hundred sixty-nine".