18000745 has 16 divisors (see below), whose sum is σ = 24756480. Its totient is φ = 12308544.

The previous prime is 18000737. The next prime is 18000751. The reversal of 18000745 is 54700081.

It is a cyclic number.

It is not a de Polignac number, because 18000745 - 2³ = 18000737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21036 + ... + 21874.

It is an arithmetic number, because the mean of its divisors is an integer number (1547280).

Almost surely, 2^18000745 is an apocalyptic number.

It is an amenable number.

18000745 is a deficient number, since it is larger than the sum of its proper divisors (6755735).

18000745 is an equidigital number, since it uses as much as digits as its factorization.

18000745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 18000745 is about 4242.7284853028. The cubic root of 18000745 is about 262.0777550235.

The spelling of 18000745 in words is "eighteen million, seven hundred forty-five", and thus it is an aban number.