118216618 has 8 divisors (see below), whose sum is σ = 190965348. Its totient is φ = 54561504.

The previous prime is 118216603. The next prime is 118216621. The reversal of 118216618 is 816612811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 114425809 + 3790809 = 10697^2 + 1947^2 .

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

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, 2273371 + ... + 2273422.

Almost surely, 2^118216618 is an apocalyptic number.

118216618 is a deficient number, since it is larger than the sum of its proper divisors (72748730).

118216618 is a wasteful number, since it uses less digits than its factorization.

118216618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546808.

The product of its digits is 4608, while the sum is 34.

The square root of 118216618 is about 10872.7465711291. The cubic root of 118216618 is about 490.7867660444.

The spelling of 118216618 in words is "one hundred eighteen million, two hundred sixteen thousand, six hundred eighteen".