18648042 has 16 divisors (see below), whose sum is σ = 42624192. Its totient is φ = 5328000.

The previous prime is 18648013. The next prime is 18648059. The reversal of 18648042 is 24084681.

It is a junction number, because it is equal to n+sod(n) for n = 18647994 and 18648012.

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, 221959 + ... + 222042.

It is an arithmetic number, because the mean of its divisors is an integer number (2664012).

Almost surely, 2^18648042 is an apocalyptic number.

18648042 is an abundant number, since it is smaller than the sum of its proper divisors (23976150).

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

18648042 is a wasteful number, since it uses less digits than its factorization.

18648042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444013.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 18648042 is about 4318.3378746921. The cubic root of 18648042 is about 265.1822266275.

The spelling of 18648042 in words is "eighteen million, six hundred forty-eight thousand, forty-two".