2548819649 has 2 divisors, whose sum is σ = 2548819650. Its totient is φ = 2548819648.

The previous prime is 2548819643. The next prime is 2548819799. The reversal of 2548819649 is 9469188452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1768623025 + 780196624 = 42055^2 + 27932^2 .

It is a cyclic number.

It is not a de Polignac number, because 2548819649 - 2²⁰ = 2547771073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2548819594 and 2548819603.

It is not a weakly prime, because it can be changed into another prime (2548819643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1274409824 + 1274409825.

It is an arithmetic number, because the mean of its divisors is an integer number (1274409825).

Almost surely, 2^2548819649 is an apocalyptic number.

It is an amenable number.

2548819649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2548819649 is an equidigital number, since it uses as much as digits as its factorization.

2548819649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4976640, while the sum is 56.

The square root of 2548819649 is about 50485.8361226196. The cubic root of 2548819649 is about 1365.9863791429.

The spelling of 2548819649 in words is "two billion, five hundred forty-eight million, eight hundred nineteen thousand, six hundred forty-nine".