118509213 has 8 divisors (see below), whose sum is σ = 166328800. Its totient is φ = 74847888.

The previous prime is 118509211. The next prime is 118509217. The reversal of 118509213 is 312905811.

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

It is not a de Polignac number, because 118509213 - 2¹ = 118509211 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 (118509211) 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 7 ways as a sum of consecutive naturals, for example, 1039498 + ... + 1039611.

It is an arithmetic number, because the mean of its divisors is an integer number (20791100).

Almost surely, 2^118509213 is an apocalyptic number.

It is an amenable number.

118509213 is a deficient number, since it is larger than the sum of its proper divisors (47819587).

118509213 is a wasteful number, since it uses less digits than its factorization.

118509213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079131.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 118509213 is about 10886.1936874189. The cubic root of 118509213 is about 491.1913437985.

The spelling of 118509213 in words is "one hundred eighteen million, five hundred nine thousand, two hundred thirteen".