6450990541 has 2 divisors, whose sum is σ = 6450990542. Its totient is φ = 6450990540.

The previous prime is 6450990473. The next prime is 6450990551. The reversal of 6450990541 is 1450990546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4839289225 + 1611701316 = 69565^2 + 40146^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6450990541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6450990551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3225495270 + 3225495271.

It is an arithmetic number, because the mean of its divisors is an integer number (3225495271).

Almost surely, 2^6450990541 is an apocalyptic number.

It is an amenable number.

6450990541 is a deficient number, since it is larger than the sum of its proper divisors (1).

6450990541 is an equidigital number, since it uses as much as digits as its factorization.

6450990541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 6450990541 is about 80318.0586232013. The cubic root of 6450990541 is about 1861.5532696155.

The spelling of 6450990541 in words is "six billion, four hundred fifty million, nine hundred ninety thousand, five hundred forty-one".