18503041 has 4 divisors (see below), whose sum is σ = 18693892. Its totient is φ = 18312192.

The previous prime is 18503033. The next prime is 18503053. The reversal of 18503041 is 14030581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12278016 + 6225025 = 3504^2 + 2495^2 .

It is a cyclic number.

It is not a de Polignac number, because 18503041 - 2³ = 18503033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18503741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95280 + ... + 95473.

It is an arithmetic number, because the mean of its divisors is an integer number (4673473).

Almost surely, 2^18503041 is an apocalyptic number.

It is an amenable number.

18503041 is a deficient number, since it is larger than the sum of its proper divisors (190851).

18503041 is an equidigital number, since it uses as much as digits as its factorization.

18503041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190850.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 18503041 is about 4301.5161280646. The cubic root of 18503041 is about 264.4931143632.

The spelling of 18503041 in words is "eighteen million, five hundred three thousand, forty-one".