18485685 has 32 divisors (see below), whose sum is σ = 33120000. Its totient is φ = 9782208.

The previous prime is 18485671. The next prime is 18485713. The reversal of 18485685 is 58658481.

18485685 is a `hidden beast` number, since 1 + 84 + 8 + 568 + 5 = 666.

It is not a de Polignac number, because 18485685 - 2⁵ = 18485653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18485685.

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 31 ways as a sum of consecutive naturals, for example, 19656 + ... + 20574.

It is an arithmetic number, because the mean of its divisors is an integer number (1035000).

Almost surely, 2^18485685 is an apocalyptic number.

18485685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18485685 is a deficient number, since it is larger than the sum of its proper divisors (14634315).

18485685 is a wasteful number, since it uses less digits than its factorization.

18485685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082 (or 1076 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The square root of 18485685 is about 4299.4982265376. The cubic root of 18485685 is about 264.4103896088.

The spelling of 18485685 in words is "eighteen million, four hundred eighty-five thousand, six hundred eighty-five".