18112079 has 4 divisors (see below), whose sum is σ = 18171384. Its totient is φ = 18052776.

The previous prime is 18112019. The next prime is 18112121. The reversal of 18112079 is 97021181.

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

It is a cyclic number.

It is not a de Polignac number, because 18112079 - 2¹² = 18107983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18112009) 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, 29192 + ... + 29805.

It is an arithmetic number, because the mean of its divisors is an integer number (4542846).

Almost surely, 2^18112079 is an apocalyptic number.

18112079 is a deficient number, since it is larger than the sum of its proper divisors (59305).

18112079 is an equidigital number, since it uses as much as digits as its factorization.

18112079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59304.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 18112079 is about 4255.8288264450. The cubic root of 18112079 is about 262.6169589158.

The spelling of 18112079 in words is "eighteen million, one hundred twelve thousand, seventy-nine".