4644318213 has 12 divisors (see below), whose sum is σ = 7103075148. Its totient is φ = 2914081920.

The previous prime is 4644318209. The next prime is 4644318233. The reversal of 4644318213 is 3128134464.

4644318213 is a `hidden beast` number, since 4 + 6 + 4 + 431 + 8 + 213 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3559076964 + 1085241249 = 59658^2 + 32943^2 .

It is not a de Polignac number, because 4644318213 - 2² = 4644318209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4644318233) 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 11 ways as a sum of consecutive naturals, for example, 15177358 + ... + 15177663.

It is an arithmetic number, because the mean of its divisors is an integer number (591922929).

Almost surely, 2^4644318213 is an apocalyptic number.

It is an amenable number.

4644318213 is a deficient number, since it is larger than the sum of its proper divisors (2458756935).

4644318213 is a wasteful number, since it uses less digits than its factorization.

4644318213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30355044 (or 30355041 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 4644318213 is about 68149.2348673116. The cubic root of 4644318213 is about 1668.4274358312.

The spelling of 4644318213 in words is "four billion, six hundred forty-four million, three hundred eighteen thousand, two hundred thirteen".