2791949549 has 2 divisors, whose sum is σ = 2791949550. Its totient is φ = 2791949548.

The previous prime is 2791949521. The next prime is 2791949551. The reversal of 2791949549 is 9459491972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2005427524 + 786522025 = 44782^2 + 28045^2 .

It is a cyclic number.

It is not a de Polignac number, because 2791949549 - 2²⁴ = 2775172333 is a prime.

It is a super-2 number, since 2×2791949549² = 15589964568322606802, which contains 22 as substring.

Together with 2791949551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2791949579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1395974774 + 1395974775.

It is an arithmetic number, because the mean of its divisors is an integer number (1395974775).

Almost surely, 2^2791949549 is an apocalyptic number.

It is an amenable number.

2791949549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2791949549 is an equidigital number, since it uses as much as digits as its factorization.

2791949549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 59.

The square root of 2791949549 is about 52838.9018527070. The cubic root of 2791949549 is about 1408.1076418128.

The spelling of 2791949549 in words is "two billion, seven hundred ninety-one million, nine hundred forty-nine thousand, five hundred forty-nine".