118218607 has 4 divisors (see below), whose sum is σ = 127312360. Its totient is φ = 109124856.

The previous prime is 118218553. The next prime is 118218613. The reversal of 118218607 is 706812811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118218607 - 2¹⁵ = 118185839 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 (118218647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4546857 + ... + 4546882.

It is an arithmetic number, because the mean of its divisors is an integer number (31828090).

Almost surely, 2^118218607 is an apocalyptic number.

118218607 is a deficient number, since it is larger than the sum of its proper divisors (9093753).

118218607 is an equidigital number, since it uses as much as digits as its factorization.

118218607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9093752.

The product of its (nonzero) digits is 5376, while the sum is 34.

The square root of 118218607 is about 10872.8380379733. The cubic root of 118218607 is about 490.7895185322.

The spelling of 118218607 in words is "one hundred eighteen million, two hundred eighteen thousand, six hundred seven".