18079573 has 4 divisors (see below), whose sum is σ = 18111808. Its totient is φ = 18047340.

The previous prime is 18079571. The next prime is 18079597. The reversal of 18079573 is 37597081.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37597081 = 17 ⋅2211593.

It is a cyclic number.

It is not a de Polignac number, because 18079573 - 2¹ = 18079571 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 (18079571) 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, 15261 + ... + 16402.

It is an arithmetic number, because the mean of its divisors is an integer number (4527952).

Almost surely, 2^18079573 is an apocalyptic number.

It is an amenable number.

18079573 is a deficient number, since it is larger than the sum of its proper divisors (32235).

18079573 is an equidigital number, since it uses as much as digits as its factorization.

18079573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32234.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 18079573 is about 4252.0081138210. The cubic root of 18079573 is about 262.4597573986.

The spelling of 18079573 in words is "eighteen million, seventy-nine thousand, five hundred seventy-three".