18113727 has 4 divisors (see below), whose sum is σ = 24151640. Its totient is φ = 12075816.

The previous prime is 18113699. The next prime is 18113737. The reversal of 18113727 is 72731181.

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

It is not a de Polignac number, because 18113727 - 2⁶ = 18113663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18113694 and 18113703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18113737) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3018952 + ... + 3018957.

It is an arithmetic number, because the mean of its divisors is an integer number (6037910).

Almost surely, 2^18113727 is an apocalyptic number.

18113727 is a deficient number, since it is larger than the sum of its proper divisors (6037913).

18113727 is an equidigital number, since it uses as much as digits as its factorization.

18113727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037912.

The product of its digits is 2352, while the sum is 30.

The square root of 18113727 is about 4256.0224388506. The cubic root of 18113727 is about 262.6249237593.

The spelling of 18113727 in words is "eighteen million, one hundred thirteen thousand, seven hundred twenty-seven".