18787085 has 16 divisors (see below), whose sum is σ = 23665152. Its totient is φ = 14299200.

The previous prime is 18787079. The next prime is 18787121. The reversal of 18787085 is 58078781.

It is not a de Polignac number, because 18787085 - 2¹⁴ = 18770701 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 8462 + ... + 10448.

It is an arithmetic number, because the mean of its divisors is an integer number (1479072).

Almost surely, 2^18787085 is an apocalyptic number.

It is an amenable number.

18787085 is a deficient number, since it is larger than the sum of its proper divisors (4878067).

18787085 is a wasteful number, since it uses less digits than its factorization.

18787085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084.

The product of its (nonzero) digits is 125440, while the sum is 44.

The square root of 18787085 is about 4334.4071105516. The cubic root of 18787085 is about 265.8396766949.

The spelling of 18787085 in words is "eighteen million, seven hundred eighty-seven thousand, eighty-five".