118886861 has 2 divisors, whose sum is σ = 118886862. Its totient is φ = 118886860.

The previous prime is 118886843. The next prime is 118886879. The reversal of 118886861 is 168688811.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (118886843) and next prime (118886879).

It can be written as a sum of positive squares in only one way, i.e., 116229961 + 2656900 = 10781^2 + 1630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118886861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118885861) 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, 59443430 + 59443431.

It is an arithmetic number, because the mean of its divisors is an integer number (59443431).

Almost surely, 2^118886861 is an apocalyptic number.

It is an amenable number.

118886861 is a deficient number, since it is larger than the sum of its proper divisors (1).

118886861 is an equidigital number, since it uses as much as digits as its factorization.

118886861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 47.

The square root of 118886861 is about 10903.5251639091. The cubic root of 118886861 is about 491.7125430460.

The spelling of 118886861 in words is "one hundred eighteen million, eight hundred eighty-six thousand, eight hundred sixty-one".