18548648 has 8 divisors (see below), whose sum is σ = 34778730. Its totient is φ = 9274320.

The previous prime is 18548641. The next prime is 18548653. The reversal of 18548648 is 84684581.

It can be written as a sum of positive squares in only one way, i.e., 17623204 + 925444 = 4198^2 + 962^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 18548599 and 18548608.

It is not an unprimeable number, because it can be changed into a prime (18548641) 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 as a sum of consecutive naturals, namely, 1159283 + ... + 1159298.

Almost surely, 2^18548648 is an apocalyptic number.

It is an amenable number.

18548648 is a deficient number, since it is larger than the sum of its proper divisors (16230082).

18548648 is a wasteful number, since it uses less digits than its factorization.

18548648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318587 (or 2318583 counting only the distinct ones).

The product of its digits is 245760, while the sum is 44.

The square root of 18548648 is about 4306.8141357621. The cubic root of 18548648 is about 264.7102469617.

The spelling of 18548648 in words is "eighteen million, five hundred forty-eight thousand, six hundred forty-eight".