118815249 has 12 divisors (see below), whose sum is σ = 184285104. Its totient is φ = 67894344.

The previous prime is 118815209. The next prime is 118815269. The reversal of 118815249 is 942518811.

It is not a de Polignac number, because 118815249 - 2²¹ = 116718097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118815209) 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 in 11 ways as a sum of consecutive naturals, for example, 403987 + ... + 404280.

It is an arithmetic number, because the mean of its divisors is an integer number (15357092).

Almost surely, 2^118815249 is an apocalyptic number.

It is an amenable number.

118815249 is a deficient number, since it is larger than the sum of its proper divisors (65469855).

118815249 is an equidigital number, since it uses as much as digits as its factorization.

118815249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808284 (or 808277 counting only the distinct ones).

The product of its digits is 23040, while the sum is 39.

The square root of 118815249 is about 10900.2407771572. The cubic root of 118815249 is about 491.6137948444.

The spelling of 118815249 in words is "one hundred eighteen million, eight hundred fifteen thousand, two hundred forty-nine".