2139759845 has 18 divisors (see below), whose sum is σ = 2603834226. Its totient is φ = 1688059200.

The previous prime is 2139759829. The next prime is 2139759857. The reversal of 2139759845 is 5489579312.

It can be written as a sum of positive squares in 3 ways, for example, as 339370084 + 1800389761 = 18422^2 + 42431^2 .

It is not a de Polignac number, because 2139759845 - 2⁴ = 2139759829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14170520 + ... + 14170670.

It is an arithmetic number, because the mean of its divisors is an integer number (144657457).

Almost surely, 2^2139759845 is an apocalyptic number.

It is an amenable number.

2139759845 is a deficient number, since it is larger than the sum of its proper divisors (464074381).

2139759845 is an frugal number, since it uses more digits than its factorization.

2139759845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 293 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 53.

The square root of 2139759845 is about 46257.5382505381. The cubic root of 2139759845 is about 1288.6105354677.

The spelling of 2139759845 in words is "two billion, one hundred thirty-nine million, seven hundred fifty-nine thousand, eight hundred forty-five".