118099509 has 12 divisors (see below), whose sum is σ = 173083008. Its totient is φ = 71575240.

The previous prime is 118099489. The next prime is 118099511. The reversal of 118099509 is 905990811.

It is not a de Polignac number, because 118099509 - 2¹³ = 118091317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118099519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162309 + ... + 163034.

It is an arithmetic number, because the mean of its divisors is an integer number (14423584).

Almost surely, 2^118099509 is an apocalyptic number.

It is an amenable number.

118099509 is a deficient number, since it is larger than the sum of its proper divisors (54983499).

118099509 is a wasteful number, since it uses less digits than its factorization.

118099509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325368 (or 325357 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 42.

The square root of 118099509 is about 10867.3597989576. The cubic root of 118099509 is about 490.6246497029.

The spelling of 118099509 in words is "one hundred eighteen million, ninety-nine thousand, five hundred nine".