9973756018 has 16 divisors (see below), whose sum is σ = 15646688640. Its totient is φ = 4759181856.

The previous prime is 9973755989. The next prime is 9973756021. The reversal of 9973756018 is 8106573799.

9973756018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 9973756018.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 226755 + ... + 267142.

It is an arithmetic number, because the mean of its divisors is an integer number (977918040).

Almost surely, 2^9973756018 is an apocalyptic number.

9973756018 is a deficient number, since it is larger than the sum of its proper divisors (5672932622).

9973756018 is a wasteful number, since it uses less digits than its factorization.

9973756018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494361.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The square root of 9973756018 is about 99868.6938835189. The cubic root of 9973756018 is about 2152.5483407168.

The spelling of 9973756018 in words is "nine billion, nine hundred seventy-three million, seven hundred fifty-six thousand, eighteen".