1648440041 has 2 divisors, whose sum is σ = 1648440042. Its totient is φ = 1648440040.

The previous prime is 1648439983. The next prime is 1648440047. The reversal of 1648440041 is 1400448461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1638225625 + 10214416 = 40475^2 + 3196^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648440041 - 2²² = 1644245737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1648440047) 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, 824220020 + 824220021.

It is an arithmetic number, because the mean of its divisors is an integer number (824220021).

Almost surely, 2^1648440041 is an apocalyptic number.

It is an amenable number.

1648440041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648440041 is an equidigital number, since it uses as much as digits as its factorization.

1648440041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 1648440041 is about 40600.9857146351. The cubic root of 1648440041 is about 1181.2932390843.

The spelling of 1648440041 in words is "one billion, six hundred forty-eight million, four hundred forty thousand, forty-one".