18538148 has 24 divisors (see below), whose sum is σ = 34295520. Its totient is φ = 8743680.

The previous prime is 18538141. The next prime is 18538159. The reversal of 18538148 is 84183581.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (18538141) 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 7 ways as a sum of consecutive naturals, for example, 26483 + ... + 27173.

It is an arithmetic number, because the mean of its divisors is an integer number (1428980).

Almost surely, 2^18538148 is an apocalyptic number.

It is an amenable number.

18538148 is a deficient number, since it is larger than the sum of its proper divisors (15757372).

18538148 is a wasteful number, since it uses less digits than its factorization.

18538148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1065 counting only the distinct ones).

The product of its digits is 30720, while the sum is 38.

The square root of 18538148 is about 4305.5949646942. The cubic root of 18538148 is about 264.6602885636.

It can be divided in two parts, 1853 and 8148, that added together give a palindrome (10001).

The spelling of 18538148 in words is "eighteen million, five hundred thirty-eight thousand, one hundred forty-eight".