18480516 has 24 divisors (see below), whose sum is σ = 43244544. Its totient is φ = 6142560.

The previous prime is 18480503. The next prime is 18480571. The reversal of 18480516 is 61508481.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2586 + ... + 6606.

It is an arithmetic number, because the mean of its divisors is an integer number (1801856).

Almost surely, 2^18480516 is an apocalyptic number.

It is an amenable number.

18480516 is an abundant number, since it is smaller than the sum of its proper divisors (24764028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18480516 is a wasteful number, since it uses less digits than its factorization.

18480516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4411 (or 4409 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 18480516 is about 4298.8970678536. The cubic root of 18480516 is about 264.3857423442.

Adding to 18480516 its reverse (61508481), we get a palindrome (79988997).

The spelling of 18480516 in words is "eighteen million, four hundred eighty thousand, five hundred sixteen".