118838 has 4 divisors (see below), whose sum is σ = 178260. Its totient is φ = 59418.

The previous prime is 118831. The next prime is 118843. The reversal of 118838 is 838811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 838811 = 61 ⋅13751.

It is a self number, because there is not a number n which added to its sum of digits gives 118838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29708 + ... + 29711.

It is an arithmetic number, because the mean of its divisors is an integer number (44565).

2¹¹⁸⁸³⁸ is an apocalyptic number.

118838 is a deficient number, since it is larger than the sum of its proper divisors (59422).

118838 is an equidigital number, since it uses as much as digits as its factorization.

118838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59421.

The product of its digits is 1536, while the sum is 29.

The square root of 118838 is about 344.7288789759. The cubic root of 118838 is about 49.1645171265.

The spelling of 118838 in words is "one hundred eighteen thousand, eight hundred thirty-eight".