118418 has 4 divisors (see below), whose sum is σ = 177630. Its totient is φ = 59208.

The previous prime is 118411. The next prime is 118423. The reversal of 118418 is 814811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 814811 = 83 ⋅9817.

It can be written as a sum of positive squares in only one way, i.e., 97969 + 20449 = 313^2 + 143^2 .

It is a junction number, because it is equal to n+sod(n) for n = 118393 and 118402.

It is not an unprimeable number, because it can be changed into a prime (118411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29603 + ... + 29606.

2¹¹⁸⁴¹⁸ is an apocalyptic number.

118418 is a deficient number, since it is larger than the sum of its proper divisors (59212).

118418 is an equidigital number, since it uses as much as digits as its factorization.

118418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59211.

The product of its digits is 256, while the sum is 23.

The square root of 118418 is about 344.1191654064. The cubic root of 118418 is about 49.1065293021.

It can be divided in two parts, 1184 and 18, that multiplied together give a palindrome (21312).

The spelling of 118418 in words is "one hundred eighteen thousand, four hundred eighteen".