18073001 has 4 divisors (see below), whose sum is σ = 18290832. Its totient is φ = 17855172.

The previous prime is 18072997. The next prime is 18073007. The reversal of 18073001 is 10037081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18073001 - 2² = 18072997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18073007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108791 + ... + 108956.

It is an arithmetic number, because the mean of its divisors is an integer number (4572708).

Almost surely, 2^18073001 is an apocalyptic number.

It is an amenable number.

18073001 is a deficient number, since it is larger than the sum of its proper divisors (217831).

18073001 is an equidigital number, since it uses as much as digits as its factorization.

18073001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217830.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 18073001 is about 4251.2352322590. The cubic root of 18073001 is about 262.4279518065.

The spelling of 18073001 in words is "eighteen million, seventy-three thousand, one".