113618 has 4 divisors (see below), whose sum is σ = 170430. Its totient is φ = 56808.

The previous prime is 113591. The next prime is 113621. The reversal of 113618 is 816311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 816311 = 349 ⋅2339.

It can be written as a sum of positive squares in only one way, i.e., 113569 + 49 = 337^2 + 7^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 113618.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 28403 + ... + 28406.

2¹¹³⁶¹⁸ is an apocalyptic number.

113618 is a deficient number, since it is larger than the sum of its proper divisors (56812).

113618 is an equidigital number, since it uses as much as digits as its factorization.

113618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56811.

The product of its digits is 144, while the sum is 20.

The square root of 113618 is about 337.0726924567. The cubic root of 113618 is about 48.4338560561.

Adding to 113618 its reverse (816311), we get a palindrome (929929).

The spelling of 113618 in words is "one hundred thirteen thousand, six hundred eighteen".