4636409641 has 2 divisors, whose sum is σ = 4636409642. Its totient is φ = 4636409640.

The previous prime is 4636409639. The next prime is 4636409669. The reversal of 4636409641 is 1469046364.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3588010000 + 1048399641 = 59900^2 + 32379^2 .

It is a cyclic number.

It is not a de Polignac number, because 4636409641 - 2¹ = 4636409639 is a prime.

Together with 4636409639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4636409671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2318204820 + 2318204821.

It is an arithmetic number, because the mean of its divisors is an integer number (2318204821).

Almost surely, 2^4636409641 is an apocalyptic number.

It is an amenable number.

4636409641 is a deficient number, since it is larger than the sum of its proper divisors (1).

4636409641 is an equidigital number, since it uses as much as digits as its factorization.

4636409641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 43.

The square root of 4636409641 is about 68091.1862211256. The cubic root of 4636409641 is about 1667.4798711856.

The spelling of 4636409641 in words is "four billion, six hundred thirty-six million, four hundred nine thousand, six hundred forty-one".