18655485 has 16 divisors (see below), whose sum is σ = 29984640. Its totient is φ = 9904320.

The previous prime is 18655457. The next prime is 18655487. The reversal of 18655485 is 58455681.

It is not a de Polignac number, because 18655485 - 2⁵ = 18655453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18655487) 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, 720 + ... + 6150.

It is an arithmetic number, because the mean of its divisors is an integer number (1874040).

Almost surely, 2^18655485 is an apocalyptic number.

18655485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18655485 is a deficient number, since it is larger than the sum of its proper divisors (11329155).

18655485 is a wasteful number, since it uses less digits than its factorization.

18655485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5668.

The product of its digits is 192000, while the sum is 42.

The square root of 18655485 is about 4319.1995786257. The cubic root of 18655485 is about 265.2175026952.

The spelling of 18655485 in words is "eighteen million, six hundred fifty-five thousand, four hundred eighty-five".