118365 has 16 divisors (see below), whose sum is σ = 204288. Its totient is φ = 58176.

The previous prime is 118361. The next prime is 118369. The reversal of 118365 is 563811.

It is an interprime number because it is at equal distance from previous prime (118361) and next prime (118369).

It is not a de Polignac number, because 118365 - 2² = 118361 is a prime.

118365 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109 + ... + 498.

It is an arithmetic number, because the mean of its divisors is an integer number (12768).

2¹¹⁸³⁶⁵ is an apocalyptic number.

118365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118365 is a deficient number, since it is larger than the sum of its proper divisors (85923).

118365 is a wasteful number, since it uses less digits than its factorization.

118365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628.

The product of its digits is 720, while the sum is 24.

The square root of 118365 is about 344.0421485807. The cubic root of 118365 is about 49.0992020533.

Subtracting from 118365 its sum of digits (24), we obtain a triangular number (118341 = T₄₈₆).

The spelling of 118365 in words is "one hundred eighteen thousand, three hundred sixty-five".