18673748 has 12 divisors (see below), whose sum is σ = 32737152. Its totient is φ = 9320280.

The previous prime is 18673729. The next prime is 18673763. The reversal of 18673748 is 84737681.

It is a junction number, because it is equal to n+sod(n) for n = 18673699 and 18673708.

It is a congruent number.

It is an unprimeable number.

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, 1418 + ... + 6273.

It is an arithmetic number, because the mean of its divisors is an integer number (2728096).

Almost surely, 2^18673748 is an apocalyptic number.

It is an amenable number.

18673748 is a deficient number, since it is larger than the sum of its proper divisors (14063404).

18673748 is a wasteful number, since it uses less digits than its factorization.

18673748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8302 (or 8300 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The square root of 18673748 is about 4321.3132263237. The cubic root of 18673748 is about 265.3040203694.

The spelling of 18673748 in words is "eighteen million, six hundred seventy-three thousand, seven hundred forty-eight".