118015 has 4 divisors (see below), whose sum is σ = 141624. Its totient is φ = 94408.

The previous prime is 117991. The next prime is 118033. The reversal of 118015 is 510811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 510811 = 7 ⋅72973.

It is a cyclic number.

It is not a de Polignac number, because 118015 - 2⁹ = 117503 is a prime.

It is a Duffinian number.

118015 is a lucky number.

It is a plaindrome in base 16.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 118015.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 11797 + ... + 11806.

It is an arithmetic number, because the mean of its divisors is an integer number (35406).

2¹¹⁸⁰¹⁵ is an apocalyptic number.

118015 is a deficient number, since it is larger than the sum of its proper divisors (23609).

118015 is an equidigital number, since it uses as much as digits as its factorization.

118015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23608.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 118015 is about 343.5331133967. The cubic root of 118015 is about 49.0507595611.

Adding to 118015 its reverse (510811), we get a palindrome (628826).

The spelling of 118015 in words is "one hundred eighteen thousand, fifteen".