118818289 has 2 divisors, whose sum is σ = 118818290. Its totient is φ = 118818288.

The previous prime is 118818283. The next prime is 118818311. The reversal of 118818289 is 982818811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115928289 + 2890000 = 10767^2 + 1700^2 .

It is a cyclic number.

It is not a de Polignac number, because 118818289 - 2¹¹ = 118816241 is a prime.

It is not a weakly prime, because it can be changed into another prime (118818283) 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, 59409144 + 59409145.

It is an arithmetic number, because the mean of its divisors is an integer number (59409145).

Almost surely, 2^118818289 is an apocalyptic number.

It is an amenable number.

118818289 is a deficient number, since it is larger than the sum of its proper divisors (1).

118818289 is an equidigital number, since it uses as much as digits as its factorization.

118818289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73728, while the sum is 46.

The square root of 118818289 is about 10900.3802227262. The cubic root of 118818289 is about 491.6179876093.

The spelling of 118818289 in words is "one hundred eighteen million, eight hundred eighteen thousand, two hundred eighty-nine".