4636644361 has 2 divisors, whose sum is σ = 4636644362. Its totient is φ = 4636644360.

The previous prime is 4636644319. The next prime is 4636644401. The reversal of 4636644361 is 1634466364.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2608042761 + 2028601600 = 51069^2 + 45040^2 .

It is a cyclic number.

It is not a de Polignac number, because 4636644361 - 2²¹ = 4634547209 is a prime.

It is not a weakly prime, because it can be changed into another prime (4636614361) 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 as a sum of consecutive naturals, namely, 2318322180 + 2318322181.

It is an arithmetic number, because the mean of its divisors is an integer number (2318322181).

Almost surely, 2^4636644361 is an apocalyptic number.

It is an amenable number.

4636644361 is a deficient number, since it is larger than the sum of its proper divisors (1).

4636644361 is an equidigital number, since it uses as much as digits as its factorization.

4636644361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 43.

The square root of 4636644361 is about 68092.9097704012. The cubic root of 4636644361 is about 1667.5080096448.

The spelling of 4636644361 in words is "four billion, six hundred thirty-six million, six hundred forty-four thousand, three hundred sixty-one".