18508748 has 12 divisors (see below), whose sum is σ = 33143880. Its totient is φ = 9039072.

The previous prime is 18508747. The next prime is 18508759. The reversal of 18508748 is 84780581.

It is not an unprimeable number, because it can be changed into a prime (18508747) 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, 53633 + ... + 53976.

It is an arithmetic number, because the mean of its divisors is an integer number (2761990).

Almost surely, 2^18508748 is an apocalyptic number.

It is an amenable number.

18508748 is a deficient number, since it is larger than the sum of its proper divisors (14635132).

18508748 is a wasteful number, since it uses less digits than its factorization.

18508748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107656 (or 107654 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 18508748 is about 4302.1794476753. The cubic root of 18508748 is about 264.5203046151.

The spelling of 18508748 in words is "eighteen million, five hundred eight thousand, seven hundred forty-eight".