2168671879 has 16 divisors (see below), whose sum is σ = 2406658176. Its totient is φ = 1937628000.

The previous prime is 2168671849. The next prime is 2168671889. The reversal of 2168671879 is 9781768612.

It is not a de Polignac number, because 2168671879 - 2²⁵ = 2135117447 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 (2168671849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341029 + ... + 347329.

It is an arithmetic number, because the mean of its divisors is an integer number (150416136).

Almost surely, 2^2168671879 is an apocalyptic number.

2168671879 is a deficient number, since it is larger than the sum of its proper divisors (237986297).

2168671879 is a wasteful number, since it uses less digits than its factorization.

2168671879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6846.

The product of its digits is 2032128, while the sum is 55.

The square root of 2168671879 is about 46569.0012669372. The cubic root of 2168671879 is about 1294.3884112402.

The spelling of 2168671879 in words is "two billion, one hundred sixty-eight million, six hundred seventy-one thousand, eight hundred seventy-nine".