18073723 has 8 divisors (see below), whose sum is σ = 18615440. Its totient is φ = 17534880.

The previous prime is 18073721. The next prime is 18073729. The reversal of 18073723 is 32737081.

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

It is a cyclic number.

It is not a de Polignac number, because 18073723 - 2¹ = 18073721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18073721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24088 + ... + 24826.

It is an arithmetic number, because the mean of its divisors is an integer number (2326930).

Almost surely, 2^18073723 is an apocalyptic number.

18073723 is a deficient number, since it is larger than the sum of its proper divisors (541717).

18073723 is an equidigital number, since it uses as much as digits as its factorization.

18073723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 18073723 is about 4251.3201479070. The cubic root of 18073723 is about 262.4314463462.

The spelling of 18073723 in words is "eighteen million, seventy-three thousand, seven hundred twenty-three".