18838541 has 8 divisors (see below), whose sum is σ = 19880640. Its totient is φ = 17815072.

The previous prime is 18838529. The next prime is 18838553. The reversal of 18838541 is 14583881.

It is an interprime number because it is at equal distance from previous prime (18838529) and next prime (18838553).

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 18838541 - 2¹⁰ = 18837517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18838495 and 18838504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18838571) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2555 + ... + 6648.

It is an arithmetic number, because the mean of its divisors is an integer number (2485080).

Almost surely, 2^18838541 is an apocalyptic number.

It is an amenable number.

18838541 is a deficient number, since it is larger than the sum of its proper divisors (1042099).

18838541 is an equidigital number, since it uses as much as digits as its factorization.

18838541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9315.

The product of its digits is 30720, while the sum is 38.

The square root of 18838541 is about 4340.3388116598. The cubic root of 18838541 is about 266.0821584645.

The spelling of 18838541 in words is "eighteen million, eight hundred thirty-eight thousand, five hundred forty-one".