9983778522 has 16 divisors (see below), whose sum is σ = 20094740832. Its totient is φ = 3306728880.

The previous prime is 9983778463. The next prime is 9983778533. The reversal of 9983778522 is 2258773899.

9983778522 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

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, 5298304 + ... + 5300187.

It is an arithmetic number, because the mean of its divisors is an integer number (1255921302).

Almost surely, 2^9983778522 is an apocalyptic number.

9983778522 is an abundant number, since it is smaller than the sum of its proper divisors (10110962310).

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

9983778522 is a wasteful number, since it uses less digits than its factorization.

9983778522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10598653.

The product of its digits is 15240960, while the sum is 60.

The square root of 9983778522 is about 99918.8596912515. The cubic root of 9983778522 is about 2153.2691223993.

The spelling of 9983778522 in words is "nine billion, nine hundred eighty-three million, seven hundred seventy-eight thousand, five hundred twenty-two".