2681510191 has 2 divisors, whose sum is σ = 2681510192. Its totient is φ = 2681510190.

The previous prime is 2681510189. The next prime is 2681510203. The reversal of 2681510191 is 1910151862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2681510191 - 2¹ = 2681510189 is a prime.

Together with 2681510189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2681510141) 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, 1340755095 + 1340755096.

It is an arithmetic number, because the mean of its divisors is an integer number (1340755096).

Almost surely, 2^2681510191 is an apocalyptic number.

2681510191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2681510191 is an equidigital number, since it uses as much as digits as its factorization.

2681510191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 34.

The square root of 2681510191 is about 51783.3003100420. The cubic root of 2681510191 is about 1389.2907706331.

The spelling of 2681510191 in words is "two billion, six hundred eighty-one million, five hundred ten thousand, one hundred ninety-one".