9668239642 has 16 divisors (see below), whose sum is σ = 15274920960. Its totient is φ = 4576908672.

The previous prime is 9668239621. The next prime is 9668239649. The reversal of 9668239642 is 2469328669.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9668239649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13303 + ... + 139690.

It is an arithmetic number, because the mean of its divisors is an integer number (954682560).

Almost surely, 2^9668239642 is an apocalyptic number.

9668239642 is a deficient number, since it is larger than the sum of its proper divisors (5606681318).

9668239642 is a wasteful number, since it uses less digits than its factorization.

9668239642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154677.

The product of its digits is 6718464, while the sum is 55.

The square root of 9668239642 is about 98327.2070283703. The cubic root of 9668239642 is about 2130.3410477578.

The spelling of 9668239642 in words is "nine billion, six hundred sixty-eight million, two hundred thirty-nine thousand, six hundred forty-two".