18542648 has 16 divisors (see below), whose sum is σ = 36812880. Its totient is φ = 8725888.

The previous prime is 18542647. The next prime is 18542677. The reversal of 18542648 is 84624581.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18542647) 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 in 3 ways as a sum of consecutive naturals, for example, 68036 + ... + 68307.

It is an arithmetic number, because the mean of its divisors is an integer number (2300805).

Almost surely, 2^18542648 is an apocalyptic number.

It is an amenable number.

18542648 is a deficient number, since it is larger than the sum of its proper divisors (18270232).

18542648 is a wasteful number, since it uses less digits than its factorization.

18542648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136366 (or 136362 counting only the distinct ones).

The product of its digits is 61440, while the sum is 38.

The square root of 18542648 is about 4306.1175088472. The cubic root of 18542648 is about 264.6817016149.

The spelling of 18542648 in words is "eighteen million, five hundred forty-two thousand, six hundred forty-eight".