115678181 has 2 divisors, whose sum is σ = 115678182. Its totient is φ = 115678180.

The previous prime is 115678159. The next prime is 115678193. The reversal of 115678181 is 181876511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113529025 + 2149156 = 10655^2 + 1466^2 .

It is a cyclic number.

It is not a de Polignac number, because 115678181 - 2²² = 111483877 is a prime.

It is a super-2 number, since 2×115678181² = 26762883118937522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115678111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57839090 + 57839091.

It is an arithmetic number, because the mean of its divisors is an integer number (57839091).

Almost surely, 2^115678181 is an apocalyptic number.

It is an amenable number.

115678181 is a deficient number, since it is larger than the sum of its proper divisors (1).

115678181 is an equidigital number, since it uses as much as digits as its factorization.

115678181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 38.

The square root of 115678181 is about 10755.3791657942. The cubic root of 115678181 is about 487.2484694975.

The spelling of 115678181 in words is "one hundred fifteen million, six hundred seventy-eight thousand, one hundred eighty-one".