18079689 has 4 divisors (see below), whose sum is σ = 24106256. Its totient is φ = 12053124.

The previous prime is 18079669. The next prime is 18079709. The reversal of 18079689 is 98697081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (18079669) and next prime (18079709).

It is not a de Polignac number, because 18079689 - 2⁷ = 18079561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18079669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3013279 + ... + 3013284.

It is an arithmetic number, because the mean of its divisors is an integer number (6026564).

Almost surely, 2^18079689 is an apocalyptic number.

It is an amenable number.

18079689 is a deficient number, since it is larger than the sum of its proper divisors (6026567).

18079689 is an equidigital number, since it uses as much as digits as its factorization.

18079689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6026566.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 18079689 is about 4252.0217544128. The cubic root of 18079689 is about 262.4603187184.

The spelling of 18079689 in words is "eighteen million, seventy-nine thousand, six hundred eighty-nine".