4821818905 has 4 divisors (see below), whose sum is σ = 5786182692. Its totient is φ = 3857455120.

The previous prime is 4821818891. The next prime is 4821818909. The reversal of 4821818905 is 5098181284.

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 668274201 + 4153544704 = 25851^2 + 64448^2 .

It is not a de Polignac number, because 4821818905 - 2¹⁷ = 4821687833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4821818909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482181886 + ... + 482181895.

It is an arithmetic number, because the mean of its divisors is an integer number (1446545673).

Almost surely, 2^4821818905 is an apocalyptic number.

It is an amenable number.

4821818905 is a deficient number, since it is larger than the sum of its proper divisors (964363787).

4821818905 is an equidigital number, since it uses as much as digits as its factorization.

4821818905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964363786.

The product of its (nonzero) digits is 184320, while the sum is 46.

The square root of 4821818905 is about 69439.3181490141. The cubic root of 4821818905 is about 1689.4174088649.

The spelling of 4821818905 in words is "four billion, eight hundred twenty-one million, eight hundred eighteen thousand, nine hundred five".