2109574836 has 18 divisors (see below), whose sum is σ = 5332536482. Its totient is φ = 703191600.

The previous prime is 2109574781. The next prime is 2109574843. The reversal of 2109574836 is 6384759012.

2109574836 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1904798736 + 204776100 = 43644^2 + 14310^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

2109574836 is strictly pandigital in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 2109574791 and 2109574800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29299615 + ... + 29299686.

It is a 1-persistent number, because it is pandigital, but 2⋅2109574836 = 4219149672 is not.

Almost surely, 2^2109574836 is an apocalyptic number.

It is an amenable number.

2109574836 is an abundant number, since it is smaller than the sum of its proper divisors (3222961646).

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

2109574836 is a wasteful number, since it uses less digits than its factorization.

2109574836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58599311 (or 58599306 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 2109574836 is about 45930.1081644709. The cubic root of 2109574836 is about 1282.5224582550.

The spelling of 2109574836 in words is "two billion, one hundred nine million, five hundred seventy-four thousand, eight hundred thirty-six".