118438 has 4 divisors (see below), whose sum is σ = 177660. Its totient is φ = 59218.

The previous prime is 118429. The next prime is 118453. The reversal of 118438 is 834811.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29608 + ... + 29611.

It is an arithmetic number, because the mean of its divisors is an integer number (44415).

2¹¹⁸⁴³⁸ is an apocalyptic number.

118438 is a deficient number, since it is larger than the sum of its proper divisors (59222).

118438 is an equidigital number, since it uses as much as digits as its factorization.

118438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59221.

The product of its digits is 768, while the sum is 25.

The square root of 118438 is about 344.1482238804. The cubic root of 118438 is about 49.1092937334.

The spelling of 118438 in words is "one hundred eighteen thousand, four hundred thirty-eight".