9791319916 has 48 divisors (see below), whose sum is σ = 20148823296. Its totient is φ = 4075372224.

The previous prime is 9791319911. The next prime is 9791319973. The reversal of 9791319916 is 6199131979.

It is not an unprimeable number, because it can be changed into a prime (9791319911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574875 + ... + 591661.

It is an arithmetic number, because the mean of its divisors is an integer number (419767152).

Almost surely, 2^9791319916 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 9791319916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10074411648).

9791319916 is an abundant number, since it is smaller than the sum of its proper divisors (10357503380).

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

9791319916 is a wasteful number, since it uses less digits than its factorization.

9791319916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17398 (or 17396 counting only the distinct ones).

The product of its digits is 826686, while the sum is 55.

The square root of 9791319916 is about 98951.0986093636. The cubic root of 9791319916 is about 2139.3429662571.

The spelling of 9791319916 in words is "nine billion, seven hundred ninety-one million, three hundred nineteen thousand, nine hundred sixteen".