9809746668 has 18 divisors (see below), whose sum is σ = 24796859724. Its totient is φ = 3269915544.

The previous prime is 9809746651. The next prime is 9809746669. The reversal of 9809746668 is 8666479089.

9809746668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×9809746668² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9809746669) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 136246446 + ... + 136246517.

It is an arithmetic number, because the mean of its divisors is an integer number (1377603318).

Almost surely, 2^9809746668 is an apocalyptic number.

It is an amenable number.

9809746668 is an abundant number, since it is smaller than the sum of its proper divisors (14987113056).

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

9809746668 is a wasteful number, since it uses less digits than its factorization.

9809746668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272492973 (or 272492968 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The square root of 9809746668 is about 99044.1652395536. The cubic root of 9809746668 is about 2140.6841691093.

The spelling of 9809746668 in words is "nine billion, eight hundred nine million, seven hundred forty-six thousand, six hundred sixty-eight".