9643868123 has 2 divisors, whose sum is σ = 9643868124. Its totient is φ = 9643868122.

The previous prime is 9643868107. The next prime is 9643868131. The reversal of 9643868123 is 3218683469.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9643868123 - 2⁴ = 9643868107 is a prime.

It is not a weakly prime, because it can be changed into another prime (9643868173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4821934061 + 4821934062.

It is an arithmetic number, because the mean of its divisors is an integer number (4821934062).

Almost surely, 2^9643868123 is an apocalyptic number.

9643868123 is a deficient number, since it is larger than the sum of its proper divisors (1).

9643868123 is an equidigital number, since it uses as much as digits as its factorization.

9643868123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 50.

The square root of 9643868123 is about 98203.1981302035. The cubic root of 9643868123 is about 2128.5495001589.

The spelling of 9643868123 in words is "nine billion, six hundred forty-three million, eight hundred sixty-eight thousand, one hundred twenty-three".