18063573 has 16 divisors (see below), whose sum is σ = 26374656. Its totient is φ = 10905840.

The previous prime is 18063553. The next prime is 18063599. The reversal of 18063573 is 37536081.

It is a happy number.

It is not a de Polignac number, because 18063573 - 2⁵ = 18063541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18063553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9240 + ... + 11022.

It is an arithmetic number, because the mean of its divisors is an integer number (1648416).

Almost surely, 2^18063573 is an apocalyptic number.

It is an amenable number.

18063573 is a deficient number, since it is larger than the sum of its proper divisors (8311083).

18063573 is a wasteful number, since it uses less digits than its factorization.

18063573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 18063573 is about 4250.1262334194. The cubic root of 18063573 is about 262.3823109621.

The spelling of 18063573 in words is "eighteen million, sixty-three thousand, five hundred seventy-three".