118135081 has 2 divisors, whose sum is σ = 118135082. Its totient is φ = 118135080.

The previous prime is 118135049. The next prime is 118135163. The reversal of 118135081 is 180531811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85747600 + 32387481 = 9260^2 + 5691^2 .

It is a cyclic number.

It is not a de Polignac number, because 118135081 - 2⁵ = 118135049 is a prime.

It is a super-2 number, since 2×118135081² = 27911794725753122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (118135481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59067540 + 59067541.

It is an arithmetic number, because the mean of its divisors is an integer number (59067541).

Almost surely, 2^118135081 is an apocalyptic number.

It is an amenable number.

118135081 is a deficient number, since it is larger than the sum of its proper divisors (1).

118135081 is an equidigital number, since it uses as much as digits as its factorization.

118135081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 28.

The square root of 118135081 is about 10868.9963198080. The cubic root of 118135081 is about 490.6739040654.

Adding to 118135081 its reverse (180531811), we get a palindrome (298666892).

The spelling of 118135081 in words is "one hundred eighteen million, one hundred thirty-five thousand, eighty-one".