18673385 has 16 divisors (see below), whose sum is σ = 22913280. Its totient is φ = 14606400.

The previous prime is 18673379. The next prime is 18673387. The reversal of 18673385 is 58337681.

It is not a de Polignac number, because 18673385 - 2⁶ = 18673321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18673387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51836 + ... + 52194.

It is an arithmetic number, because the mean of its divisors is an integer number (1432080).

Almost surely, 2^18673385 is an apocalyptic number.

It is an amenable number.

18673385 is a deficient number, since it is larger than the sum of its proper divisors (4239895).

18673385 is a wasteful number, since it uses less digits than its factorization.

18673385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568.

The product of its digits is 120960, while the sum is 41.

The square root of 18673385 is about 4321.2712249985. The cubic root of 18673385 is about 265.3023012719.

The spelling of 18673385 in words is "eighteen million, six hundred seventy-three thousand, three hundred eighty-five".