4543646689 has 2 divisors, whose sum is σ = 4543646690. Its totient is φ = 4543646688.

The previous prime is 4543646683. The next prime is 4543646707. The reversal of 4543646689 is 9866463454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4302310464 + 241336225 = 65592^2 + 15535^2 .

It is a cyclic number.

It is not a de Polignac number, because 4543646689 - 2²⁹ = 4006775777 is a prime.

It is not a weakly prime, because it can be changed into another prime (4543646683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2271823344 + 2271823345.

It is an arithmetic number, because the mean of its divisors is an integer number (2271823345).

Almost surely, 2^4543646689 is an apocalyptic number.

It is an amenable number.

4543646689 is a deficient number, since it is larger than the sum of its proper divisors (1).

4543646689 is an equidigital number, since it uses as much as digits as its factorization.

4543646689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14929920, while the sum is 55.

The square root of 4543646689 is about 67406.5774906277. The cubic root of 4543646689 is about 1656.2841703566.

The spelling of 4543646689 in words is "four billion, five hundred forty-three million, six hundred forty-six thousand, six hundred eighty-nine".