2109984740 has 24 divisors (see below), whose sum is σ = 4476652152. Its totient is φ = 835292160.

The previous prime is 2109984719. The next prime is 2109984757. The reversal of 2109984740 is 474899012.

It can be written as a sum of positive squares in 4 ways, for example, as 677665024 + 1432319716 = 26032^2 + 37846^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2109984691 and 2109984700.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541871 + ... + 545750.

It is an arithmetic number, because the mean of its divisors is an integer number (186527173).

Almost surely, 2^2109984740 is an apocalyptic number.

2109984740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2109984740 is an abundant number, since it is smaller than the sum of its proper divisors (2366667412).

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

2109984740 is a wasteful number, since it uses less digits than its factorization.

2109984740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087727 (or 1087725 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 2109984740 is about 45934.5702058918. The cubic root of 2109984740 is about 1282.6055203379.

The spelling of 2109984740 in words is "two billion, one hundred nine million, nine hundred eighty-four thousand, seven hundred forty".