2109130285 has 4 divisors (see below), whose sum is σ = 2530956348. Its totient is φ = 1687304224.

The previous prime is 2109130253. The next prime is 2109130343. The reversal of 2109130285 is 5820319012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 886788841 + 1222341444 = 29779^2 + 34962^2 .

It is a cyclic number.

It is not a de Polignac number, because 2109130285 - 2⁵ = 2109130253 is a prime.

It is a super-3 number, since 3×2109130285³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210913024 + ... + 210913033.

It is an arithmetic number, because the mean of its divisors is an integer number (632739087).

Almost surely, 2^2109130285 is an apocalyptic number.

It is an amenable number.

2109130285 is a deficient number, since it is larger than the sum of its proper divisors (421826063).

2109130285 is an equidigital number, since it uses as much as digits as its factorization.

2109130285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421826062.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 2109130285 is about 45925.2684804346. The cubic root of 2109130285 is about 1282.4323632138.

Adding to 2109130285 its reverse (5820319012), we get a palindrome (7929449297).

The spelling of 2109130285 in words is "two billion, one hundred nine million, one hundred thirty thousand, two hundred eighty-five".