2747738681 has 2 divisors, whose sum is σ = 2747738682. Its totient is φ = 2747738680.

The previous prime is 2747738663. The next prime is 2747738699. The reversal of 2747738681 is 1868377472.

2747738681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2747738663) and next prime (2747738699).

It can be written as a sum of positive squares in only one way, i.e., 2474167081 + 273571600 = 49741^2 + 16540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2747738681 is a prime.

It is a super-2 number, since 2×2747738681² = 15100135718127239522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2747738621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1373869340 + 1373869341.

It is an arithmetic number, because the mean of its divisors is an integer number (1373869341).

Almost surely, 2^2747738681 is an apocalyptic number.

It is an amenable number.

2747738681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2747738681 is an equidigital number, since it uses as much as digits as its factorization.

2747738681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3161088, while the sum is 53.

The square root of 2747738681 is about 52418.8771436398. The cubic root of 2747738681 is about 1400.6355415491.

The spelling of 2747738681 in words is "two billion, seven hundred forty-seven million, seven hundred thirty-eight thousand, six hundred eighty-one".