118988609 has 2 divisors, whose sum is σ = 118988610. Its totient is φ = 118988608.

The previous prime is 118988603. The next prime is 118988671. The reversal of 118988609 is 906889811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105001009 + 13987600 = 10247^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 118988609 - 2¹⁶ = 118923073 is a prime.

It is not a weakly prime, because it can be changed into another prime (118988603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59494304 + 59494305.

It is an arithmetic number, because the mean of its divisors is an integer number (59494305).

Almost surely, 2^118988609 is an apocalyptic number.

It is an amenable number.

118988609 is a deficient number, since it is larger than the sum of its proper divisors (1).

118988609 is an equidigital number, since it uses as much as digits as its factorization.

118988609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 50.

The square root of 118988609 is about 10908.1899965118. The cubic root of 118988609 is about 491.8527786208.

It can be divided in two parts, 1189 and 88609, that added together give a palindrome (89798).

The spelling of 118988609 in words is "one hundred eighteen million, nine hundred eighty-eight thousand, six hundred nine".