2857015213 has 4 divisors (see below), whose sum is σ = 3076785628. Its totient is φ = 2637244800.

The previous prime is 2857015201. The next prime is 2857015261. The reversal of 2857015213 is 3125107582.

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 138227049 + 2718788164 = 11757^2 + 52142^2 .

It is a cyclic number.

It is not a de Polignac number, because 2857015213 - 2⁵ = 2857015181 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 (2857015613) 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, 109885188 + ... + 109885213.

It is an arithmetic number, because the mean of its divisors is an integer number (769196407).

Almost surely, 2^2857015213 is an apocalyptic number.

It is an amenable number.

2857015213 is a deficient number, since it is larger than the sum of its proper divisors (219770415).

2857015213 is a wasteful number, since it uses less digits than its factorization.

2857015213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219770414.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 2857015213 is about 53451.0543675239. The cubic root of 2857015213 is about 1418.9622804149.

The spelling of 2857015213 in words is "two billion, eight hundred fifty-seven million, fifteen thousand, two hundred thirteen".