9810989128 has 16 divisors (see below), whose sum is σ = 18434016000. Its totient is φ = 4895251536.

The previous prime is 9810989117. The next prime is 9810989129. The reversal of 9810989128 is 8219890189.

It is not an unprimeable number, because it can be changed into a prime (9810989129) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1276308 + ... + 1283971.

It is an arithmetic number, because the mean of its divisors is an integer number (1152126000).

Almost surely, 2^9810989128 is an apocalyptic number.

It is an amenable number.

9810989128 is a deficient number, since it is larger than the sum of its proper divisors (8623026872).

9810989128 is a wasteful number, since it uses less digits than its factorization.

9810989128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560764 (or 2560760 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 55.

The square root of 9810989128 is about 99050.4372933305. The cubic root of 9810989128 is about 2140.7745418872.

The spelling of 9810989128 in words is "nine billion, eight hundred ten million, nine hundred eighty-nine thousand, one hundred twenty-eight".