9319791940 has 12 divisors (see below), whose sum is σ = 19571563116. Its totient is φ = 3727916768.

The previous prime is 9319791893. The next prime is 9319791967. The reversal of 9319791940 is 491979139.

It can be written as a sum of positive squares in 2 ways, for example, as 3568389696 + 5751402244 = 59736^2 + 75838^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232994779 + ... + 232994818.

It is an arithmetic number, because the mean of its divisors is an integer number (1630963593).

Almost surely, 2^9319791940 is an apocalyptic number.

It is an amenable number.

9319791940 is an abundant number, since it is smaller than the sum of its proper divisors (10251771176).

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

9319791940 is a wasteful number, since it uses less digits than its factorization.

9319791940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465989606 (or 465989604 counting only the distinct ones).

The product of its (nonzero) digits is 551124, while the sum is 52.

The square root of 9319791940 is about 96539.0695003841. The cubic root of 9319791940 is about 2104.4344645955.

The spelling of 9319791940 in words is "nine billion, three hundred nineteen million, seven hundred ninety-one thousand, nine hundred forty".