18338541 has 8 divisors (see below), whose sum is σ = 26332320. Its totient is φ = 11285232.

The previous prime is 18338531. The next prime is 18338561. The reversal of 18338541 is 14583381.

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

It is not a de Polignac number, because 18338541 - 2¹⁹ = 17814253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18338501) 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, 235071 + ... + 235148.

It is an arithmetic number, because the mean of its divisors is an integer number (3291540).

Almost surely, 2^18338541 is an apocalyptic number.

It is an amenable number.

18338541 is a deficient number, since it is larger than the sum of its proper divisors (7993779).

18338541 is a wasteful number, since it uses less digits than its factorization.

18338541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470235.

The product of its digits is 11520, while the sum is 33.

The square root of 18338541 is about 4282.3522741596. The cubic root of 18338541 is about 263.7069607751.

The spelling of 18338541 in words is "eighteen million, three hundred thirty-eight thousand, five hundred forty-one".