18050506 has 8 divisors (see below), whose sum is σ = 27111204. Its totient is φ = 9013440.

The previous prime is 18050503. The next prime is 18050521. The reversal of 18050506 is 60505081.

It can be written as a sum of positive squares in 2 ways, for example, as 16475481 + 1575025 = 4059^2 + 1255^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18050503) 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 3 ways as a sum of consecutive naturals, for example, 3855 + ... + 7138.

Almost surely, 2^18050506 is an apocalyptic number.

18050506 is a deficient number, since it is larger than the sum of its proper divisors (9060698).

18050506 is a wasteful number, since it uses less digits than its factorization.

18050506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11816.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 18050506 is about 4248.5887068531. The cubic root of 18050506 is about 262.3190274926.

Adding to 18050506 its reverse (60505081), we get a palindrome (78555587).

The spelling of 18050506 in words is "eighteen million, fifty thousand, five hundred six".