2857650849 has 27 divisors (see below), whose sum is σ = 4192414707. Its totient is φ = 1875699216.

The previous prime is 2857650839. The next prime is 2857650857. The reversal of 2857650849 is 9480567582.

The square root of 2857650849 is 53457.

It is a perfect power (a square), and thus also a powerful number.

2857650849 is a `hidden beast` number, since 28 + 5 + 76 + 508 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2599470225 + 258180624 = 50985^2 + 16068^2 .

It is not a de Polignac number, because 2857650849 - 2⁷ = 2857650721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2857650795 and 2857650804.

It is not an unprimeable number, because it can be changed into a prime (2857650839) 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 26 ways as a sum of consecutive naturals, for example, 16518127 + ... + 16518299.

Almost surely, 2^2857650849 is an apocalyptic number.

2857650849 is the 53457-th square number.

2857650849 is the 26729-th centered octagonal number.

It is an amenable number.

2857650849 is a deficient number, since it is larger than the sum of its proper divisors (1334763858).

2857650849 is an equidigital number, since it uses as much as digits as its factorization.

2857650849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The cubic root of 2857650849 is about 1419.0675040557.

The spelling of 2857650849 in words is "two billion, eight hundred fifty-seven million, six hundred fifty thousand, eight hundred forty-nine".