9802168985 has 24 divisors (see below), whose sum is σ = 13698860616. Its totient is φ = 6713710080.

The previous prime is 9802168949. The next prime is 9802168997. The reversal of 9802168985 is 5898612089.

It can be written as a sum of positive squares in 4 ways, for example, as 378419209 + 9423749776 = 19453^2 + 97076^2 .

It is not a de Polignac number, because 9802168985 - 2⁶ = 9802168921 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9802168985.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193139 + ... + 238551.

It is an arithmetic number, because the mean of its divisors is an integer number (570785859).

Almost surely, 2^9802168985 is an apocalyptic number.

It is an amenable number.

9802168985 is a deficient number, since it is larger than the sum of its proper divisors (3896691631).

9802168985 is a wasteful number, since it uses less digits than its factorization.

9802168985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46313 (or 46306 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 56.

The square root of 9802168985 is about 99005.9037886125. The cubic root of 9802168985 is about 2140.1328261370.

The spelling of 9802168985 in words is "nine billion, eight hundred two million, one hundred sixty-eight thousand, nine hundred eighty-five".