18238485 has 8 divisors (see below), whose sum is σ = 29181600. Its totient is φ = 9727184.

The previous prime is 18238483. The next prime is 18238523. The reversal of 18238485 is 58483281.

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 18238485 - 2¹ = 18238483 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18238483) 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, 607935 + ... + 607964.

It is an arithmetic number, because the mean of its divisors is an integer number (3647700).

Almost surely, 2^18238485 is an apocalyptic number.

18238485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18238485 is a deficient number, since it is larger than the sum of its proper divisors (10943115).

18238485 is a wasteful number, since it uses less digits than its factorization.

18238485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215907.

The product of its digits is 61440, while the sum is 39.

The square root of 18238485 is about 4270.6539311913. The cubic root of 18238485 is about 263.2264864114.

The spelling of 18238485 in words is "eighteen million, two hundred thirty-eight thousand, four hundred eighty-five".