118418215 has 4 divisors (see below), whose sum is σ = 142101864. Its totient is φ = 94734568.

The previous prime is 118418207. The next prime is 118418227. The reversal of 118418215 is 512814811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512814811 = 181 ⋅2833231.

It is a cyclic number.

It is not a de Polignac number, because 118418215 - 2³ = 118418207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11841817 + ... + 11841826.

It is an arithmetic number, because the mean of its divisors is an integer number (35525466).

Almost surely, 2^118418215 is an apocalyptic number.

118418215 is a deficient number, since it is larger than the sum of its proper divisors (23683649).

118418215 is an equidigital number, since it uses as much as digits as its factorization.

118418215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23683648.

The product of its digits is 2560, while the sum is 31.

The square root of 118418215 is about 10882.0133706957. The cubic root of 118418215 is about 491.0655902135.

The spelling of 118418215 in words is "one hundred eighteen million, four hundred eighteen thousand, two hundred fifteen".