2713661981 has 2 divisors, whose sum is σ = 2713661982. Its totient is φ = 2713661980.

The previous prime is 2713661971. The next prime is 2713662059. The reversal of 2713661981 is 1891663172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2291153956 + 422508025 = 47866^2 + 20555^2 .

It is a cyclic number.

It is not a de Polignac number, because 2713661981 - 2⁶ = 2713661917 is a prime.

It is a super-2 number, since 2×2713661981² = 14727922694249688722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2713661971) 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, 1356830990 + 1356830991.

It is an arithmetic number, because the mean of its divisors is an integer number (1356830991).

Almost surely, 2^2713661981 is an apocalyptic number.

It is an amenable number.

2713661981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2713661981 is an equidigital number, since it uses as much as digits as its factorization.

2713661981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 2713661981 is about 52092.8208201476. The cubic root of 2713661981 is about 1394.8213404973.

The spelling of 2713661981 in words is "two billion, seven hundred thirteen million, six hundred sixty-one thousand, nine hundred eighty-one".