18284485 has 8 divisors (see below), whose sum is σ = 22206240. Its totient is φ = 14451024.

The previous prime is 18284473. The next prime is 18284489. The reversal of 18284485 is 58448281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18284485 - 2⁹ = 18283973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18284489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21615 + ... + 22444.

It is an arithmetic number, because the mean of its divisors is an integer number (2775780).

Almost surely, 2^18284485 is an apocalyptic number.

It is an amenable number.

18284485 is a deficient number, since it is larger than the sum of its proper divisors (3921755).

18284485 is an equidigital number, since it uses as much as digits as its factorization.

18284485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44147.

The product of its digits is 81920, while the sum is 40.

The square root of 18284485 is about 4276.0361317463. The cubic root of 18284485 is about 263.4475985799.

It can be divided in two parts, 18284 and 485, that added together give a square (18769 = 137²).

The spelling of 18284485 in words is "eighteen million, two hundred eighty-four thousand, four hundred eighty-five".