115846981 has 2 divisors, whose sum is σ = 115846982. Its totient is φ = 115846980.

The previous prime is 115846979. The next prime is 115847041. The reversal of 115846981 is 189648511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95062500 + 20784481 = 9750^2 + 4559^2 .

It is a cyclic number.

It is not a de Polignac number, because 115846981 - 2¹ = 115846979 is a prime.

It is a super-2 number, since 2×115846981² = 26841046013628722, which contains 22 as substring.

Together with 115846979, 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 (115846921) 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, 57923490 + 57923491.

It is an arithmetic number, because the mean of its divisors is an integer number (57923491).

Almost surely, 2^115846981 is an apocalyptic number.

It is an amenable number.

115846981 is a deficient number, since it is larger than the sum of its proper divisors (1).

115846981 is an equidigital number, since it uses as much as digits as its factorization.

115846981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 43.

The square root of 115846981 is about 10763.2235413003. The cubic root of 115846981 is about 487.4853553348.

The spelling of 115846981 in words is "one hundred fifteen million, eight hundred forty-six thousand, nine hundred eighty-one".