118664915 has 4 divisors (see below), whose sum is σ = 142397904. Its totient is φ = 94931928.

The previous prime is 118664911. The next prime is 118664963. The reversal of 118664915 is 519466811.

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 118664915 - 2² = 118664911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118664911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11866487 + ... + 11866496.

It is an arithmetic number, because the mean of its divisors is an integer number (35599476).

Almost surely, 2^118664915 is an apocalyptic number.

118664915 is a deficient number, since it is larger than the sum of its proper divisors (23732989).

118664915 is an equidigital number, since it uses as much as digits as its factorization.

118664915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23732988.

The product of its digits is 51840, while the sum is 41.

The square root of 118664915 is about 10893.3426917544. The cubic root of 118664915 is about 491.4063650704.

The spelling of 118664915 in words is "one hundred eighteen million, six hundred sixty-four thousand, nine hundred fifteen".