118808861 has 2 divisors, whose sum is σ = 118808862. Its totient is φ = 118808860.

The previous prime is 118808827. The next prime is 118808873. The reversal of 118808861 is 168808811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87516025 + 31292836 = 9355^2 + 5594^2 .It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 198808811 and 118808891.

It is a cyclic number.

It is not a de Polignac number, because 118808861 - 2²⁶ = 51699997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118808821) 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, 59404430 + 59404431.

It is an arithmetic number, because the mean of its divisors is an integer number (59404431).

Almost surely, 2^118808861 is an apocalyptic number.

It is an amenable number.

118808861 is a deficient number, since it is larger than the sum of its proper divisors (1).

118808861 is an equidigital number, since it uses as much as digits as its factorization.

118808861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24576, while the sum is 41.

The square root of 118808861 is about 10899.9477521684. The cubic root of 118808861 is about 491.6049842885.

The spelling of 118808861 in words is "one hundred eighteen million, eight hundred eight thousand, eight hundred sixty-one".