2448644557 has 2 divisors, whose sum is σ = 2448644558. Its totient is φ = 2448644556.

The previous prime is 2448644543. The next prime is 2448644567. The reversal of 2448644557 is 7554468442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2372274436 + 76370121 = 48706^2 + 8739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2448644557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2448644557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2448644537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1224322278 + 1224322279.

It is an arithmetic number, because the mean of its divisors is an integer number (1224322279).

Almost surely, 2^2448644557 is an apocalyptic number.

It is an amenable number.

2448644557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2448644557 is an equidigital number, since it uses as much as digits as its factorization.

2448644557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4300800, while the sum is 49.

The square root of 2448644557 is about 49483.7807468265. The cubic root of 2448644557 is about 1347.8510955413.

The spelling of 2448644557 in words is "two billion, four hundred forty-eight million, six hundred forty-four thousand, five hundred fifty-seven".