113916181 has 2 divisors, whose sum is σ = 113916182. Its totient is φ = 113916180.

The previous prime is 113916119. The next prime is 113916193. The reversal of 113916181 is 181619311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82174225 + 31741956 = 9065^2 + 5634^2 .

It is a cyclic number.

It is not a de Polignac number, because 113916181 - 2⁷ = 113916053 is a prime.

It is a super-2 number, since 2×113916181² = 25953792587249522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113916581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56958090 + 56958091.

It is an arithmetic number, because the mean of its divisors is an integer number (56958091).

Almost surely, 2^113916181 is an apocalyptic number.

It is an amenable number.

113916181 is a deficient number, since it is larger than the sum of its proper divisors (1).

113916181 is an equidigital number, since it uses as much as digits as its factorization.

113916181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 31.

The square root of 113916181 is about 10673.1523459567. The cubic root of 113916181 is about 484.7618925455.

The spelling of 113916181 in words is "one hundred thirteen million, nine hundred sixteen thousand, one hundred eighty-one".