18080517 has 32 divisors (see below), whose sum is σ = 30005248. Its totient is φ = 9429696.

The previous prime is 18080497. The next prime is 18080521. The reversal of 18080517 is 71508081.

It is not a de Polignac number, because 18080517 - 2⁶ = 18080453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18080417) 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 31 ways as a sum of consecutive naturals, for example, 27798 + ... + 28440.

It is an arithmetic number, because the mean of its divisors is an integer number (937664).

Almost surely, 2^18080517 is an apocalyptic number.

It is an amenable number.

18080517 is a deficient number, since it is larger than the sum of its proper divisors (11924731).

18080517 is a wasteful number, since it uses less digits than its factorization.

18080517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769.

The product of its (nonzero) digits is 2240, while the sum is 30.

The square root of 18080517 is about 4252.1191187454. The cubic root of 18080517 is about 262.4643253106.

Adding to 18080517 its reverse (71508081), we get a palindrome (89588598).

The spelling of 18080517 in words is "eighteen million, eighty thousand, five hundred seventeen".