9973849128 has 64 divisors (see below), whose sum is σ = 25849152000. Its totient is φ = 3203165952.

The previous prime is 9973849087. The next prime is 9973849141. The reversal of 9973849128 is 8219483799.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318426 + ... + 348342.

It is an arithmetic number, because the mean of its divisors is an integer number (403893000).

Almost surely, 2^9973849128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9973849128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12924576000).

9973849128 is an abundant number, since it is smaller than the sum of its proper divisors (15875302872).

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

9973849128 is a wasteful number, since it uses less digits than its factorization.

9973849128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30434 (or 30430 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 60.

The square root of 9973849128 is about 99869.1600445303. The cubic root of 9973849128 is about 2152.5550390677. Note that the first 3 decimals are identical.

The spelling of 9973849128 in words is "nine billion, nine hundred seventy-three million, eight hundred forty-nine thousand, one hundred twenty-eight".