2081879839 has 4 divisors (see below), whose sum is σ = 2242024456. Its totient is φ = 1921735224.

The previous prime is 2081879831. The next prime is 2081879843. The reversal of 2081879839 is 9389781802.

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 2081879839 - 2³ = 2081879831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2081879839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081879831) 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, 80072289 + ... + 80072314.

It is an arithmetic number, because the mean of its divisors is an integer number (560506114).

Almost surely, 2^2081879839 is an apocalyptic number.

2081879839 is a deficient number, since it is larger than the sum of its proper divisors (160144617).

2081879839 is a wasteful number, since it uses less digits than its factorization.

2081879839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160144616.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The square root of 2081879839 is about 45627.6214479782. The cubic root of 2081879839 is about 1276.8852978430.

The spelling of 2081879839 in words is "two billion, eighty-one million, eight hundred seventy-nine thousand, eight hundred thirty-nine".