9842910985 has 4 divisors (see below), whose sum is σ = 11811493188. Its totient is φ = 7874328784.

The previous prime is 9842910983. The next prime is 9842910989. The reversal of 9842910985 is 5890192489.

9842910985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2598858441 + 7244052544 = 50979^2 + 85112^2 .

It is a cyclic number.

It is not a de Polignac number, because 9842910985 - 2¹ = 9842910983 is a prime.

It is a super-3 number, since 3×9842910985³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9842910983) 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 3 ways as a sum of consecutive naturals, for example, 984291094 + ... + 984291103.

It is an arithmetic number, because the mean of its divisors is an integer number (2952873297).

Almost surely, 2^9842910985 is an apocalyptic number.

It is an amenable number.

9842910985 is a deficient number, since it is larger than the sum of its proper divisors (1968582203).

9842910985 is a wasteful number, since it uses less digits than its factorization.

9842910985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968582202.

The product of its (nonzero) digits is 1866240, while the sum is 55.

The square root of 9842910985 is about 99211.4458366574. The cubic root of 9842910985 is about 2143.0938294868.

The spelling of 9842910985 in words is "nine billion, eight hundred forty-two million, nine hundred ten thousand, nine hundred eighty-five".