3928116649 has 2 divisors, whose sum is σ = 3928116650. Its totient is φ = 3928116648.

The previous prime is 3928116583. The next prime is 3928116667. The reversal of 3928116649 is 9466118293.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3881290000 + 46826649 = 62300^2 + 6843^2 .

It is a cyclic number.

It is not a de Polignac number, because 3928116649 - 2¹⁵ = 3928083881 is a prime.

It is not a weakly prime, because it can be changed into another prime (3928116749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1964058324 + 1964058325.

It is an arithmetic number, because the mean of its divisors is an integer number (1964058325).

Almost surely, 2^3928116649 is an apocalyptic number.

It is an amenable number.

3928116649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3928116649 is an equidigital number, since it uses as much as digits as its factorization.

3928116649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 3928116649 is about 62674.6890618534. The cubic root of 3928116649 is about 1577.8345393704.

The spelling of 3928116649 in words is "three billion, nine hundred twenty-eight million, one hundred sixteen thousand, six hundred forty-nine".