18014505 has 16 divisors (see below), whose sum is σ = 28914624. Its totient is φ = 9577280.

The previous prime is 18014501. The next prime is 18014533. The reversal of 18014505 is 50541081.

It is not a de Polignac number, because 18014505 - 2² = 18014501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18014501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3475 + ... + 6935.

It is an arithmetic number, because the mean of its divisors is an integer number (1807164).

Almost surely, 2^18014505 is an apocalyptic number.

18014505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18014505 is a deficient number, since it is larger than the sum of its proper divisors (10900119).

18014505 is a wasteful number, since it uses less digits than its factorization.

18014505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 18014505 is about 4244.3497735224. The cubic root of 18014505 is about 262.1445165460.

Adding to 18014505 its reverse (50541081), we get a palindrome (68555586).

The spelling of 18014505 in words is "eighteen million, fourteen thousand, five hundred five".