2109575109 has 8 divisors (see below), whose sum is σ = 2841764800. Its totient is φ = 1391884416.

The previous prime is 2109575093. The next prime is 2109575123. The reversal of 2109575109 is 9015759012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2109575109 - 2⁴ = 2109575093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109575129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3624409 + ... + 3624990.

It is an arithmetic number, because the mean of its divisors is an integer number (355220600).

Almost surely, 2^2109575109 is an apocalyptic number.

It is an amenable number.

2109575109 is a deficient number, since it is larger than the sum of its proper divisors (732189691).

2109575109 is an equidigital number, since it uses as much as digits as its factorization.

2109575109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7249499.

The product of its (nonzero) digits is 28350, while the sum is 39.

The square root of 2109575109 is about 45930.1111363776. Note that the first 4 decimals coincide. The cubic root of 2109575109 is about 1282.5225135787.

The spelling of 2109575109 in words is "two billion, one hundred nine million, five hundred seventy-five thousand, one hundred nine".