18079445 has 8 divisors (see below), whose sum is σ = 21729336. Its totient is φ = 14440896.

The previous prime is 18079427. The next prime is 18079447. The reversal of 18079445 is 54497081.

It can be written as a sum of positive squares in 4 ways, for example, as 4844401 + 13235044 = 2201^2 + 3638^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18079445 - 2⁸ = 18079189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18079399 and 18079408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18079447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1199 + ... + 6131.

It is an arithmetic number, because the mean of its divisors is an integer number (2716167).

Almost surely, 2^18079445 is an apocalyptic number.

It is an amenable number.

18079445 is a deficient number, since it is larger than the sum of its proper divisors (3649891).

18079445 is an equidigital number, since it uses as much as digits as its factorization.

18079445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5671.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 18079445 is about 4251.9930620828. The cubic root of 18079445 is about 262.4591380084.

The spelling of 18079445 in words is "eighteen million, seventy-nine thousand, four hundred forty-five".