3920527649 has 2 divisors, whose sum is σ = 3920527650. Its totient is φ = 3920527648.

The previous prime is 3920527643. The next prime is 3920527651. The reversal of 3920527649 is 9467250293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2691534400 + 1228993249 = 51880^2 + 35057^2 .

It is a cyclic number.

It is not a de Polignac number, because 3920527649 - 2¹⁶ = 3920462113 is a prime.

Together with 3920527651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3920527643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1960263824 + 1960263825.

It is an arithmetic number, because the mean of its divisors is an integer number (1960263825).

Almost surely, 2^3920527649 is an apocalyptic number.

It is an amenable number.

3920527649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3920527649 is an equidigital number, since it uses as much as digits as its factorization.

3920527649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 3920527649 is about 62614.1170104634. The cubic root of 3920527649 is about 1576.8177751099.

The spelling of 3920527649 in words is "three billion, nine hundred twenty million, five hundred twenty-seven thousand, six hundred forty-nine".