4857505805 has 4 divisors (see below), whose sum is σ = 5829006972. Its totient is φ = 3886004640.

The previous prime is 4857505799. The next prime is 4857505843. The reversal of 4857505805 is 5085057584.

4857505805 = T₄₄₀₇₇ + T₄₄₀₇₈ + ... + T₄₄₀₈₁.

It is a happy number.

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 3111185284 + 1746320521 = 55778^2 + 41789^2 .

It is not a de Polignac number, because 4857505805 - 2¹² = 4857501709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4857505805.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 485750576 + ... + 485750585.

It is an arithmetic number, because the mean of its divisors is an integer number (1457251743).

Almost surely, 2^4857505805 is an apocalyptic number.

It is an amenable number.

4857505805 is a deficient number, since it is larger than the sum of its proper divisors (971501167).

4857505805 is an equidigital number, since it uses as much as digits as its factorization.

4857505805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971501166.

The product of its (nonzero) digits is 1120000, while the sum is 47.

The square root of 4857505805 is about 69695.8090920824. The cubic root of 4857505805 is about 1693.5750335914.

The spelling of 4857505805 in words is "four billion, eight hundred fifty-seven million, five hundred five thousand, eight hundred five".