18445011 has 16 divisors (see below), whose sum is σ = 27638016. Its totient is φ = 10856736.

The previous prime is 18445003. The next prime is 18445027. The reversal of 18445011 is 11054481.

It is not a de Polignac number, because 18445011 - 2³ = 18445003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18445001) 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 15 ways as a sum of consecutive naturals, for example, 9385 + ... + 11178.

It is an arithmetic number, because the mean of its divisors is an integer number (1727376).

Almost surely, 2^18445011 is an apocalyptic number.

18445011 is a deficient number, since it is larger than the sum of its proper divisors (9193005).

18445011 is a wasteful number, since it uses less digits than its factorization.

18445011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20602.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 18445011 is about 4294.7655349274. The cubic root of 18445011 is about 264.2163200602.

Adding to 18445011 its reverse (11054481), we get a palindrome (29499492).

The spelling of 18445011 in words is "eighteen million, four hundred forty-five thousand, eleven".