2109261444 has 12 divisors (see below), whose sum is σ = 4921610064. Its totient is φ = 703087144.

The previous prime is 2109261443. The next prime is 2109261449. The reversal of 2109261444 is 4441629012.

2109261444 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2109261443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87885882 + ... + 87885905.

It is an arithmetic number, because the mean of its divisors is an integer number (410134172).

Almost surely, 2^2109261444 is an apocalyptic number.

It is an amenable number.

2109261444 is an abundant number, since it is smaller than the sum of its proper divisors (2812348620).

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

2109261444 is a wasteful number, since it uses less digits than its factorization.

2109261444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175771794 (or 175771792 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 2109261444 is about 45926.6964194030. The cubic root of 2109261444 is about 1282.4589459023.

The spelling of 2109261444 in words is "two billion, one hundred nine million, two hundred sixty-one thousand, four hundred forty-four".