2756118649 has 2 divisors, whose sum is σ = 2756118650. Its totient is φ = 2756118648.

The previous prime is 2756118647. The next prime is 2756118671. The reversal of 2756118649 is 9468116572.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2619392400 + 136726249 = 51180^2 + 11693^2 .

It is a cyclic number.

It is not a de Polignac number, because 2756118649 - 2¹ = 2756118647 is a prime.

Together with 2756118647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2756118647) 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, 1378059324 + 1378059325.

It is an arithmetic number, because the mean of its divisors is an integer number (1378059325).

Almost surely, 2^2756118649 is an apocalyptic number.

It is an amenable number.

2756118649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2756118649 is an equidigital number, since it uses as much as digits as its factorization.

2756118649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 49.

The square root of 2756118649 is about 52498.7490231910. The cubic root of 2756118649 is about 1402.0579680794.

The spelling of 2756118649 in words is "two billion, seven hundred fifty-six million, one hundred eighteen thousand, six hundred forty-nine".