4821865857 has 12 divisors (see below), whose sum is σ = 6965519184. Its totient is φ = 3214299480.

The previous prime is 4821865831. The next prime is 4821865897. The reversal of 4821865857 is 7585681284.

4821865857 is a `hidden beast` number, since 48 + 2 + 18 + 6 + 585 + 7 = 666.

It is not a de Polignac number, because 4821865857 - 2⁷ = 4821865729 is a prime.

It is a super-3 number, since 3×4821865857³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (4821865817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195382 + ... + 218672.

It is an arithmetic number, because the mean of its divisors is an integer number (580459932).

Almost surely, 2^4821865857 is an apocalyptic number.

It is an amenable number.

4821865857 is a deficient number, since it is larger than the sum of its proper divisors (2143653327).

4821865857 is a wasteful number, since it uses less digits than its factorization.

4821865857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46300 (or 46297 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 54.

The square root of 4821865857 is about 69439.6562275477. The cubic root of 4821865857 is about 1689.4228923605.

The spelling of 4821865857 in words is "four billion, eight hundred twenty-one million, eight hundred sixty-five thousand, eight hundred fifty-seven".