2749228213 has 2 divisors, whose sum is σ = 2749228214. Its totient is φ = 2749228212.

The previous prime is 2749228171. The next prime is 2749228247. The reversal of 2749228213 is 3128229472.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1711228689 + 1037999524 = 41367^2 + 32218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2749228213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2749228613) 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, 1374614106 + 1374614107.

It is an arithmetic number, because the mean of its divisors is an integer number (1374614107).

Almost surely, 2^2749228213 is an apocalyptic number.

It is an amenable number.

2749228213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2749228213 is an equidigital number, since it uses as much as digits as its factorization.

2749228213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 40.

The square root of 2749228213 is about 52433.0831918170. The cubic root of 2749228213 is about 1400.8885877598. Note that the first 3 decimals are identical.

The spelling of 2749228213 in words is "two billion, seven hundred forty-nine million, two hundred twenty-eight thousand, two hundred thirteen".