2116913920 has 144 divisors (see below), whose sum is σ = 5562950400. Its totient is φ = 765440000.

The previous prime is 2116913881. The next prime is 2116913947. The reversal of 2116913920 is 293196112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3533781 + ... + 3534379.

It is an arithmetic number, because the mean of its divisors is an integer number (38631600).

Almost surely, 2^2116913920 is an apocalyptic number.

2116913920 is a gapful number since it is divisible by the number (20) 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 2116913920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2781475200).

2116913920 is an abundant number, since it is smaller than the sum of its proper divisors (3446036480).

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

2116913920 is a wasteful number, since it uses less digits than its factorization.

2116913920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 2116913920 is about 46009.9328406378. The cubic root of 2116913920 is about 1284.0080097067.

The spelling of 2116913920 in words is "two billion, one hundred sixteen million, nine hundred thirteen thousand, nine hundred twenty".