2109524443 has 4 divisors (see below), whose sum is σ = 2271795568. Its totient is φ = 1947253320.

The previous prime is 2109524437. The next prime is 2109524447. The reversal of 2109524443 is 3444259012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2109524443 - 2¹³ = 2109516251 is a prime.

It is a super-2 number, since 2×2109524443² = 8900186751228920498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2109524399 and 2109524408.

It is not an unprimeable number, because it can be changed into a prime (2109524447) 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, 81135543 + ... + 81135568.

It is an arithmetic number, because the mean of its divisors is an integer number (567948892).

Almost surely, 2^2109524443 is an apocalyptic number.

2109524443 is a deficient number, since it is larger than the sum of its proper divisors (162271125).

2109524443 is a wasteful number, since it uses less digits than its factorization.

2109524443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162271124.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 2109524443 is about 45929.5595776837. The cubic root of 2109524443 is about 1282.5122459809.

The spelling of 2109524443 in words is "two billion, one hundred nine million, five hundred twenty-four thousand, four hundred forty-three".