18073565 has 8 divisors (see below), whose sum is σ = 21742560. Its totient is φ = 14422672.

The previous prime is 18073553. The next prime is 18073591. The reversal of 18073565 is 56537081.

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 18073565 - 2⁸ = 18073309 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2219 + ... + 6408.

It is an arithmetic number, because the mean of its divisors is an integer number (2717820).

Almost surely, 2^18073565 is an apocalyptic number.

It is an amenable number.

18073565 is a deficient number, since it is larger than the sum of its proper divisors (3668995).

18073565 is an equidigital number, since it uses as much as digits as its factorization.

18073565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9051.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 18073565 is about 4251.3015654032. The cubic root of 18073565 is about 262.4306816211.

The spelling of 18073565 in words is "eighteen million, seventy-three thousand, five hundred sixty-five".