4468644689 has 2 divisors, whose sum is σ = 4468644690. Its totient is φ = 4468644688.

The previous prime is 4468644683. The next prime is 4468644737. The reversal of 4468644689 is 9864468644.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2946318400 + 1522326289 = 54280^2 + 39017^2 .

It is a cyclic number.

It is not a de Polignac number, because 4468644689 - 2⁴ = 4468644673 is a prime.

It is not a weakly prime, because it can be changed into another prime (4468644683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2234322344 + 2234322345.

It is an arithmetic number, because the mean of its divisors is an integer number (2234322345).

Almost surely, 2^4468644689 is an apocalyptic number.

It is an amenable number.

4468644689 is a deficient number, since it is larger than the sum of its proper divisors (1).

4468644689 is an equidigital number, since it uses as much as digits as its factorization.

4468644689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31850496, while the sum is 59.

The square root of 4468644689 is about 66847.9220993443. The cubic root of 4468644689 is about 1647.1201296973.

The spelling of 4468644689 in words is "four billion, four hundred sixty-eight million, six hundred forty-four thousand, six hundred eighty-nine".