18038741 has 8 divisors (see below), whose sum is σ = 21054720. Its totient is φ = 15132528.

The previous prime is 18038731. The next prime is 18038743. The reversal of 18038741 is 14783081.

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 18038741 - 2⁶ = 18038677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18038698 and 18038707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18038743) 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, 27086 + ... + 27743.

It is an arithmetic number, because the mean of its divisors is an integer number (2631840).

Almost surely, 2^18038741 is an apocalyptic number.

It is an amenable number.

18038741 is a deficient number, since it is larger than the sum of its proper divisors (3015979).

18038741 is an equidigital number, since it uses as much as digits as its factorization.

18038741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54883.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 18038741 is about 4247.2039037466. The cubic root of 18038741 is about 262.2620234745.

The spelling of 18038741 in words is "eighteen million, thirty-eight thousand, seven hundred forty-one".