18450065 has 4 divisors (see below), whose sum is σ = 22140084. Its totient is φ = 14760048.

The previous prime is 18450059. The next prime is 18450101. The reversal of 18450065 is 56005481.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2989441 + 15460624 = 1729^2 + 3932^2 .

It is a cyclic number.

It is not a de Polignac number, because 18450065 - 2⁶ = 18450001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1845002 + ... + 1845011.

It is an arithmetic number, because the mean of its divisors is an integer number (5535021).

Almost surely, 2^18450065 is an apocalyptic number.

It is an amenable number.

18450065 is a deficient number, since it is larger than the sum of its proper divisors (3690019).

18450065 is an equidigital number, since it uses as much as digits as its factorization.

18450065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690018.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 18450065 is about 4295.3538853044. The cubic root of 18450065 is about 264.2404499335.

The spelling of 18450065 in words is "eighteen million, four hundred fifty thousand, sixty-five".