3643403761 has 2 divisors, whose sum is σ = 3643403762. Its totient is φ = 3643403760.

The previous prime is 3643403749. The next prime is 3643403789. The reversal of 3643403761 is 1673043463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2432363761 + 1211040000 = 49319^2 + 34800^2 .

It is a cyclic number.

It is not a de Polignac number, because 3643403761 - 2⁷ = 3643403633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3643403761.

It is not a weakly prime, because it can be changed into another prime (3643403861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1821701880 + 1821701881.

It is an arithmetic number, because the mean of its divisors is an integer number (1821701881).

Almost surely, 2^3643403761 is an apocalyptic number.

It is an amenable number.

3643403761 is a deficient number, since it is larger than the sum of its proper divisors (1).

3643403761 is an equidigital number, since it uses as much as digits as its factorization.

3643403761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 37.

The square root of 3643403761 is about 60360.6143192728. The cubic root of 3643403761 is about 1538.7536665081.

The spelling of 3643403761 in words is "three billion, six hundred forty-three million, four hundred three thousand, seven hundred sixty-one".