2544491549 has 2 divisors, whose sum is σ = 2544491550. Its totient is φ = 2544491548.

The previous prime is 2544491519. The next prime is 2544491561. The reversal of 2544491549 is 9451944452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2014663225 + 529828324 = 44885^2 + 23018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2544491549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2544491519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272245774 + 1272245775.

It is an arithmetic number, because the mean of its divisors is an integer number (1272245775).

Almost surely, 2^2544491549 is an apocalyptic number.

It is an amenable number.

2544491549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2544491549 is an equidigital number, since it uses as much as digits as its factorization.

2544491549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 47.

The square root of 2544491549 is about 50442.9534127414. The cubic root of 2544491549 is about 1365.2127563104.

The spelling of 2544491549 in words is "two billion, five hundred forty-four million, four hundred ninety-one thousand, five hundred forty-nine".