2749346681 has 2 divisors, whose sum is σ = 2749346682. Its totient is φ = 2749346680.

The previous prime is 2749346651. The next prime is 2749346731. The reversal of 2749346681 is 1866439472.

It is an a-pointer prime, because the next prime (2749346731) can be obtained adding 2749346681 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1721503081 + 1027843600 = 41491^2 + 32060^2 .

It is a cyclic number.

It is not a de Polignac number, because 2749346681 - 2⁶ = 2749346617 is a prime.

It is a super-2 number, since 2×2749346681² = 15117814344651431522, which contains 22 as substring.

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 (2749346651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1374673340 + 1374673341.

It is an arithmetic number, because the mean of its divisors is an integer number (1374673341).

Almost surely, 2^2749346681 is an apocalyptic number.

It is an amenable number.

2749346681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2749346681 is an equidigital number, since it uses as much as digits as its factorization.

2749346681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 50.

The square root of 2749346681 is about 52434.2128862444. The cubic root of 2749346681 is about 1400.9087095386.

The spelling of 2749346681 in words is "two billion, seven hundred forty-nine million, three hundred forty-six thousand, six hundred eighty-one".