2109730668 has 96 divisors (see below), whose sum is σ = 5399654400. Its totient is φ = 638238720.

The previous prime is 2109730661. The next prime is 2109730669. The reversal of 2109730668 is 8660379012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2109730661) 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, 2839105 + ... + 2839847.

It is an arithmetic number, because the mean of its divisors is an integer number (56246400).

Almost surely, 2^2109730668 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 2109730668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2699827200).

2109730668 is an abundant number, since it is smaller than the sum of its proper divisors (3289923732).

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

2109730668 is a wasteful number, since it uses less digits than its factorization.

2109730668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 2109730668 is about 45931.8045367260. The cubic root of 2109730668 is about 1282.5540369907.

The spelling of 2109730668 in words is "two billion, one hundred nine million, seven hundred thirty thousand, six hundred sixty-eight".