9638566456 has 8 divisors (see below), whose sum is σ = 18072312120. Its totient is φ = 4819283224.

The previous prime is 9638566439. The next prime is 9638566459. The reversal of 9638566456 is 6546658369.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 9638566456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9638566459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602410396 + ... + 602410411.

It is an arithmetic number, because the mean of its divisors is an integer number (2259039015).

Almost surely, 2^9638566456 is an apocalyptic number.

It is an amenable number.

9638566456 is a deficient number, since it is larger than the sum of its proper divisors (8433745664).

9638566456 is a wasteful number, since it uses less digits than its factorization.

9638566456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204820813 (or 1204820809 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 58.

The square root of 9638566456 is about 98176.2010672648. The cubic root of 9638566456 is about 2128.1593756064.

The spelling of 9638566456 in words is "nine billion, six hundred thirty-eight million, five hundred sixty-six thousand, four hundred fifty-six".