118493109 has 12 divisors (see below), whose sum is σ = 195607776. Its totient is φ = 67710312.

The previous prime is 118493083. The next prime is 118493119. The reversal of 118493109 is 901394811.

It is not a de Polignac number, because 118493109 - 2⁹ = 118492597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118493119) 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, 940359 + ... + 940484.

It is an arithmetic number, because the mean of its divisors is an integer number (16300648).

Almost surely, 2^118493109 is an apocalyptic number.

It is an amenable number.

118493109 is a deficient number, since it is larger than the sum of its proper divisors (77114667).

118493109 is a wasteful number, since it uses less digits than its factorization.

118493109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880856 (or 1880853 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 118493109 is about 10885.4540098243. The cubic root of 118493109 is about 491.1690937598.

The spelling of 118493109 in words is "one hundred eighteen million, four hundred ninety-three thousand, one hundred nine".