4821865865 has 8 divisors (see below), whose sum is σ = 5806832328. Its totient is φ = 3843763840.

The previous prime is 4821865831. The next prime is 4821865897. The reversal of 4821865865 is 5685681284.

It can be written as a sum of positive squares in 4 ways, for example, as 75620416 + 4746245449 = 8696^2 + 68893^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4821865865 - 2¹² = 4821861769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1714562 + ... + 1717371.

It is an arithmetic number, because the mean of its divisors is an integer number (725854041).

Almost surely, 2^4821865865 is an apocalyptic number.

It is an amenable number.

4821865865 is a deficient number, since it is larger than the sum of its proper divisors (984966463).

4821865865 is a wasteful number, since it uses less digits than its factorization.

4821865865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432219.

The product of its digits is 3686400, while the sum is 53.

The square root of 4821865865 is about 69439.6562851516. The cubic root of 4821865865 is about 1689.4228932948.

The spelling of 4821865865 in words is "four billion, eight hundred twenty-one million, eight hundred sixty-five thousand, eight hundred sixty-five".