18007573 has 16 divisors (see below), whose sum is σ = 20243520. Its totient is φ = 15918336.

The previous prime is 18007553. The next prime is 18007601. The reversal of 18007573 is 37570081.

It is a cyclic number.

It is not a de Polignac number, because 18007573 - 2⁹ = 18007061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18007553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63490 + ... + 63772.

It is an arithmetic number, because the mean of its divisors is an integer number (1265220).

Almost surely, 2^18007573 is an apocalyptic number.

It is an amenable number.

18007573 is a deficient number, since it is larger than the sum of its proper divisors (2235947).

18007573 is a wasteful number, since it uses less digits than its factorization.

18007573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 18007573 is about 4243.5330798758. The cubic root of 18007573 is about 262.1108877392.

The spelling of 18007573 in words is "eighteen million, seven thousand, five hundred seventy-three".