9812568642 has 8 divisors (see below), whose sum is σ = 19625137296. Its totient is φ = 3270856212.

The previous prime is 9812568617. The next prime is 9812568697. The reversal of 9812568642 is 2468652189.

It is a happy number.

9812568642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

9812568642 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817714048 + ... + 817714059.

It is an arithmetic number, because the mean of its divisors is an integer number (2453142162).

Almost surely, 2^9812568642 is an apocalyptic number.

9812568642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9812568642 is a wasteful number, since it uses less digits than its factorization.

9812568642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635428112.

The product of its digits is 1658880, while the sum is 51.

The square root of 9812568642 is about 99058.4102537488. The cubic root of 9812568642 is about 2140.8894199378.

The spelling of 9812568642 in words is "nine billion, eight hundred twelve million, five hundred sixty-eight thousand, six hundred forty-two".