2081879977 has 4 divisors (see below), whose sum is σ = 2083479040. Its totient is φ = 2080280916.

The previous prime is 2081879971. The next prime is 2081880007. The reversal of 2081879977 is 7799781802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2081879977 - 2¹¹ = 2081877929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2081879971) by changing a digit.

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, 797577 + ... + 800182.

It is an arithmetic number, because the mean of its divisors is an integer number (520869760).

Almost surely, 2^2081879977 is an apocalyptic number.

It is an amenable number.

2081879977 is a deficient number, since it is larger than the sum of its proper divisors (1599063).

2081879977 is a wasteful number, since it uses less digits than its factorization.

2081879977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599062.

The product of its (nonzero) digits is 3556224, while the sum is 58.

The square root of 2081879977 is about 45627.6229602201. The cubic root of 2081879977 is about 1276.8853260563.

The spelling of 2081879977 in words is "two billion, eighty-one million, eight hundred seventy-nine thousand, nine hundred seventy-seven".