2109637872 has 50 divisors (see below), whose sum is σ = 6105907808. Its totient is φ = 703212192.

The previous prime is 2109637819. The next prime is 2109637879. The reversal of 2109637872 is 2787369012.

2109637872 is a `hidden beast` number, since 2 + 1 + 0 + 9 + 637 + 8 + 7 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109637879) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 812608 + ... + 815199.

Almost surely, 2^2109637872 is an apocalyptic number.

It is an amenable number.

2109637872 is an abundant number, since it is smaller than the sum of its proper divisors (3996269936).

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

2109637872 is a wasteful number, since it uses less digits than its factorization.

2109637872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627827 (or 1627812 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 2109637872 is about 45930.7943758869. The cubic root of 2109637872 is about 1282.5352324372.

The spelling of 2109637872 in words is "two billion, one hundred nine million, six hundred thirty-seven thousand, eight hundred seventy-two".