2109339648 has 144 divisors (see below), whose sum is σ = 6561533160. Its totient is φ = 648953856.

The previous prime is 2109339643. The next prime is 2109339677. The reversal of 2109339648 is 8469339012.

It is a happy number.

2109339648 is a `hidden beast` number, since 210 + 9 + 3 + 396 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109339643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235215 + ... + 244017.

Almost surely, 2^2109339648 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 2109339648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3280766580).

2109339648 is an abundant number, since it is smaller than the sum of its proper divisors (4452193512).

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

2109339648 is a wasteful number, since it uses less digits than its factorization.

2109339648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8844 (or 8821 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 2109339648 is about 45927.5478117437. The cubic root of 2109339648 is about 1282.4747953963.

The spelling of 2109339648 in words is "two billion, one hundred nine million, three hundred thirty-nine thousand, six hundred forty-eight".