109418618 has 4 divisors (see below), whose sum is σ = 164127930. Its totient is φ = 54709308.

The previous prime is 109418611. The next prime is 109418633. The reversal of 109418618 is 816814901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 816814901 = 7 ⋅116687843.

It can be written as a sum of positive squares in only one way, i.e., 108638929 + 779689 = 10423^2 + 883^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109418611) 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 as a sum of consecutive naturals, namely, 27354653 + ... + 27354656.

Almost surely, 2^109418618 is an apocalyptic number.

109418618 is a deficient number, since it is larger than the sum of its proper divisors (54709312).

109418618 is an equidigital number, since it uses as much as digits as its factorization.

109418618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54709311.

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 109418618 is about 10460.3354630719. The cubic root of 109418618 is about 478.2963592308.

The spelling of 109418618 in words is "one hundred nine million, four hundred eighteen thousand, six hundred eighteen".