8543489161 has 2 divisors, whose sum is σ = 8543489162. Its totient is φ = 8543489160.

The previous prime is 8543489153. The next prime is 8543489183. The reversal of 8543489161 is 1619843458.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8340255625 + 203233536 = 91325^2 + 14256^2 .

It is a cyclic number.

It is not a de Polignac number, because 8543489161 - 2³ = 8543489153 is a prime.

It is not a weakly prime, because it can be changed into another prime (8543481161) 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, 4271744580 + 4271744581.

It is an arithmetic number, because the mean of its divisors is an integer number (4271744581).

Almost surely, 2^8543489161 is an apocalyptic number.

It is an amenable number.

8543489161 is a deficient number, since it is larger than the sum of its proper divisors (1).

8543489161 is an equidigital number, since it uses as much as digits as its factorization.

8543489161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 49.

The square root of 8543489161 is about 92430.9967543356. The cubic root of 8543489161 is about 2044.3021760870.

The spelling of 8543489161 in words is "eight billion, five hundred forty-three million, four hundred eighty-nine thousand, one hundred sixty-one".