118328989 has 2 divisors, whose sum is σ = 118328990. Its totient is φ = 118328988.

The previous prime is 118328963. The next prime is 118329023. The reversal of 118328989 is 989823811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114126489 + 4202500 = 10683^2 + 2050^2 .

It is a cyclic number.

It is not a de Polignac number, because 118328989 - 2⁵ = 118328957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118320989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59164494 + 59164495.

It is an arithmetic number, because the mean of its divisors is an integer number (59164495).

Almost surely, 2^118328989 is an apocalyptic number.

It is an amenable number.

118328989 is a deficient number, since it is larger than the sum of its proper divisors (1).

118328989 is an equidigital number, since it uses as much as digits as its factorization.

118328989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 49.

The square root of 118328989 is about 10877.9128972427. The cubic root of 118328989 is about 490.9422228532.

The spelling of 118328989 in words is "one hundred eighteen million, three hundred twenty-eight thousand, nine hundred eighty-nine".