2578681873 has 8 divisors (see below), whose sum is σ = 2768826240. Its totient is φ = 2392810560.

The previous prime is 2578681867. The next prime is 2578681877. The reversal of 2578681873 is 3781868752.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2578681873 - 2⁹ = 2578681361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2578681877) 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 7 ways as a sum of consecutive naturals, for example, 1067013 + ... + 1069426.

It is an arithmetic number, because the mean of its divisors is an integer number (346103280).

Almost surely, 2^2578681873 is an apocalyptic number.

It is an amenable number.

2578681873 is a deficient number, since it is larger than the sum of its proper divisors (190144367).

2578681873 is a wasteful number, since it uses less digits than its factorization.

2578681873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136527.

The product of its digits is 4515840, while the sum is 55.

The square root of 2578681873 is about 50780.7234391161. The cubic root of 2578681873 is about 1371.3003571641.

The spelling of 2578681873 in words is "two billion, five hundred seventy-eight million, six hundred eighty-one thousand, eight hundred seventy-three".