2109731832 has 112 divisors (see below), whose sum is σ = 6387360840. Its totient is φ = 649124928.

The previous prime is 2109731831. The next prime is 2109731839. The reversal of 2109731832 is 2381379012.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109731831) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 61903 + ... + 89729.

Almost surely, 2^2109731832 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 2109731832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3193680420).

2109731832 is an abundant number, since it is smaller than the sum of its proper divisors (4277629008).

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

2109731832 is a wasteful number, since it uses less digits than its factorization.

2109731832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27864 (or 27845 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 2109731832 is about 45931.8172076830. The cubic root of 2109731832 is about 1282.5542728648.

The spelling of 2109731832 in words is "two billion, one hundred nine million, seven hundred thirty-one thousand, eight hundred thirty-two".