118493309 has 8 divisors (see below), whose sum is σ = 134885952. Its totient is φ = 103037440.

The previous prime is 118493267. The next prime is 118493341. The reversal of 118493309 is 903394811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-118493309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118493359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233924 + ... + 234429.

It is an arithmetic number, because the mean of its divisors is an integer number (16860744).

Almost surely, 2^118493309 is an apocalyptic number.

It is an amenable number.

118493309 is a deficient number, since it is larger than the sum of its proper divisors (16392643).

118493309 is a wasteful number, since it uses less digits than its factorization.

118493309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468387.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 118493309 is about 10885.4631963918. The cubic root of 118493309 is about 491.1693701015.

The spelling of 118493309 in words is "one hundred eighteen million, four hundred ninety-three thousand, three hundred nine".