18540326 has 12 divisors (see below), whose sum is σ = 32351148. Its totient is φ = 7945812.

The previous prime is 18540317. The next prime is 18540329. The reversal of 18540326 is 62304581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18540329) 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 5 ways as a sum of consecutive naturals, for example, 94496 + ... + 94691.

It is an arithmetic number, because the mean of its divisors is an integer number (2695929).

Almost surely, 2^18540326 is an apocalyptic number.

18540326 is a deficient number, since it is larger than the sum of its proper divisors (13810822).

18540326 is a wasteful number, since it uses less digits than its factorization.

18540326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189203 (or 189196 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 18540326 is about 4305.8478839829. The cubic root of 18540326 is about 264.6706529131.

The spelling of 18540326 in words is "eighteen million, five hundred forty thousand, three hundred twenty-six".