2813857887 has 4 divisors (see below), whose sum is σ = 3751810520. Its totient is φ = 1875905256.

The previous prime is 2813857873. The next prime is 2813857889. The reversal of 2813857887 is 7887583182.

2813857887 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2813857887 - 2²² = 2809663583 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 (2813857889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468976312 + ... + 468976317.

It is an arithmetic number, because the mean of its divisors is an integer number (937952630).

Almost surely, 2^2813857887 is an apocalyptic number.

2813857887 is a deficient number, since it is larger than the sum of its proper divisors (937952633).

2813857887 is an equidigital number, since it uses as much as digits as its factorization.

2813857887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937952632.

The product of its digits is 6021120, while the sum is 57.

The square root of 2813857887 is about 53045.8093255254. The cubic root of 2813857887 is about 1411.7811748770.

The spelling of 2813857887 in words is "two billion, eight hundred thirteen million, eight hundred fifty-seven thousand, eight hundred eighty-seven".