2655642449 has 2 divisors, whose sum is σ = 2655642450. Its totient is φ = 2655642448.

The previous prime is 2655642443. The next prime is 2655642601. The reversal of 2655642449 is 9442465562.

2655642449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2082279424 + 573363025 = 45632^2 + 23945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2655642449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2655642443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1327821224 + 1327821225.

It is an arithmetic number, because the mean of its divisors is an integer number (1327821225).

Almost surely, 2^2655642449 is an apocalyptic number.

It is an amenable number.

2655642449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2655642449 is an equidigital number, since it uses as much as digits as its factorization.

2655642449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 47.

The square root of 2655642449 is about 51532.9258726884. The cubic root of 2655642449 is about 1384.8089679048.

The spelling of 2655642449 in words is "two billion, six hundred fifty-five million, six hundred forty-two thousand, four hundred forty-nine".