2873684721 has 4 divisors (see below), whose sum is σ = 3831579632. Its totient is φ = 1915789812.

The previous prime is 2873684689. The next prime is 2873684741. The reversal of 2873684721 is 1274863782.

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 not a de Polignac number, because 2873684721 - 2⁵ = 2873684689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2873684741) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 478947451 + ... + 478947456.

It is an arithmetic number, because the mean of its divisors is an integer number (957894908).

Almost surely, 2^2873684721 is an apocalyptic number.

It is an amenable number.

2873684721 is a deficient number, since it is larger than the sum of its proper divisors (957894911).

2873684721 is an equidigital number, since it uses as much as digits as its factorization.

2873684721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957894910.

The product of its digits is 903168, while the sum is 48.

The square root of 2873684721 is about 53606.7600308021. The cubic root of 2873684721 is about 1421.7166175159.

The spelling of 2873684721 in words is "two billion, eight hundred seventy-three million, six hundred eighty-four thousand, seven hundred twenty-one".