2878684313 has 4 divisors (see below), whose sum is σ = 2880191028. Its totient is φ = 2877177600.

The previous prime is 2878684309. The next prime is 2878684337. The reversal of 2878684313 is 3134868782.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2179769344 + 698914969 = 46688^2 + 26437^2 .

It is a cyclic number.

It is not a de Polignac number, because 2878684313 - 2² = 2878684309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2878684343) 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, 750488 + ... + 754313.

It is an arithmetic number, because the mean of its divisors is an integer number (720047757).

Almost surely, 2^2878684313 is an apocalyptic number.

It is an amenable number.

2878684313 is a deficient number, since it is larger than the sum of its proper divisors (1506715).

2878684313 is a wasteful number, since it uses less digits than its factorization.

2878684313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506714.

The product of its digits is 1548288, while the sum is 50.

The square root of 2878684313 is about 53653.3718698089. The cubic root of 2878684313 is about 1422.5406333197.

The spelling of 2878684313 in words is "two billion, eight hundred seventy-eight million, six hundred eighty-four thousand, three hundred thirteen".