4991579320 has 128 divisors (see below), whose sum is σ = 14144739840. Its totient is φ = 1542965760.

The previous prime is 4991579311. The next prime is 4991579323. The reversal of 4991579320 is 239751994.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991579323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140575 + ... + 172465.

It is an arithmetic number, because the mean of its divisors is an integer number (110505780).

Almost surely, 2^4991579320 is an apocalyptic number.

4991579320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4991579320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7072369920).

4991579320 is an abundant number, since it is smaller than the sum of its proper divisors (9153160520).

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

4991579320 is a wasteful number, since it uses less digits than its factorization.

4991579320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31965 (or 31961 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 4991579320 is about 70651.1098285087. The cubic root of 4991579320 is about 1709.0154632629.

The spelling of 4991579320 in words is "four billion, nine hundred ninety-one million, five hundred seventy-nine thousand, three hundred twenty".