4643649529 has 2 divisors, whose sum is σ = 4643649530. Its totient is φ = 4643649528.

The previous prime is 4643649523. The next prime is 4643649547. The reversal of 4643649529 is 9259463464.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3959303929 + 684345600 = 62923^2 + 26160^2 .

It is a cyclic number.

It is not a de Polignac number, because 4643649529 - 2⁵ = 4643649497 is a prime.

It is not a weakly prime, because it can be changed into another prime (4643649523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2321824764 + 2321824765.

It is an arithmetic number, because the mean of its divisors is an integer number (2321824765).

Almost surely, 2^4643649529 is an apocalyptic number.

It is an amenable number.

4643649529 is a deficient number, since it is larger than the sum of its proper divisors (1).

4643649529 is an equidigital number, since it uses as much as digits as its factorization.

4643649529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 52.

The square root of 4643649529 is about 68144.3286635065. The cubic root of 4643649529 is about 1668.3473591850.

The spelling of 4643649529 in words is "four billion, six hundred forty-three million, six hundred forty-nine thousand, five hundred twenty-nine".