113918 has 16 divisors (see below), whose sum is σ = 199680. Its totient is φ = 47736.

The previous prime is 113909. The next prime is 113921. The reversal of 113918 is 819311.

It is a junction number, because it is equal to n+sod(n) for n = 113893 and 113902.

It is a congruent number.

It is an unprimeable number.

113918 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 1055 + ... + 1157.

It is an arithmetic number, because the mean of its divisors is an integer number (12480).

2¹¹³⁹¹⁸ is an apocalyptic number.

113918 is a deficient number, since it is larger than the sum of its proper divisors (85762).

113918 is a wasteful number, since it uses less digits than its factorization.

113918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191.

The product of its digits is 216, while the sum is 23.

The square root of 113918 is about 337.5174069585. The cubic root of 113918 is about 48.4764472738.

It can be divided in two parts, 1139 and 18, that multiplied together give a palindrome (20502).

The spelling of 113918 in words is "one hundred thirteen thousand, nine hundred eighteen".