18656948 has 12 divisors (see below), whose sum is σ = 32955552. Its totient is φ = 9241080.

The previous prime is 18656929. The next prime is 18656951. The reversal of 18656948 is 84965681.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 21368 + ... + 22223.

It is an arithmetic number, because the mean of its divisors is an integer number (2746296).

Almost surely, 2^18656948 is an apocalyptic number.

It is an amenable number.

18656948 is a deficient number, since it is larger than the sum of its proper divisors (14298604).

18656948 is a wasteful number, since it uses less digits than its factorization.

18656948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43702 (or 43700 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 18656948 is about 4319.3689353886. The cubic root of 18656948 is about 265.2244354742.

The spelling of 18656948 in words is "eighteen million, six hundred fifty-six thousand, nine hundred forty-eight".