18468565 has 8 divisors (see below), whose sum is σ = 22234968. Its totient is φ = 14726400.

The previous prime is 18468547. The next prime is 18468577. The reversal of 18468565 is 56586481.

It can be written as a sum of positive squares in 4 ways, for example, as 4356 + 18464209 = 66^2 + 4297^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-18468565 is a prime.

It is a Duffinian 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, 4336 + ... + 7465.

It is an arithmetic number, because the mean of its divisors is an integer number (2779371).

Almost surely, 2^18468565 is an apocalyptic number.

It is an amenable number.

18468565 is a deficient number, since it is larger than the sum of its proper divisors (3766403).

18468565 is a wasteful number, since it uses less digits than its factorization.

18468565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12119.

The product of its digits is 230400, while the sum is 43.

The square root of 18468565 is about 4297.5068353640. The cubic root of 18468565 is about 264.3287389691.

The spelling of 18468565 in words is "eighteen million, four hundred sixty-eight thousand, five hundred sixty-five".