9888195668 has 12 divisors (see below), whose sum is σ = 18635445780. Its totient is φ = 4563782592.

The previous prime is 9888195659. The next prime is 9888195689. The reversal of 9888195668 is 8665918889.

It can be written as a sum of positive squares in 2 ways, for example, as 4086022084 + 5802173584 = 63922^2 + 76172^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9888195598 and 9888195607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95078753 + ... + 95078856.

It is an arithmetic number, because the mean of its divisors is an integer number (1552953815).

Almost surely, 2^9888195668 is an apocalyptic number.

It is an amenable number.

9888195668 is a deficient number, since it is larger than the sum of its proper divisors (8747250112).

9888195668 is a wasteful number, since it uses less digits than its factorization.

9888195668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190157626 (or 190157624 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 68.

The square root of 9888195668 is about 99439.4070175401. The cubic root of 9888195668 is about 2146.3754085228.

The spelling of 9888195668 in words is "nine billion, eight hundred eighty-eight million, one hundred ninety-five thousand, six hundred sixty-eight".