18520341 has 16 divisors (see below), whose sum is σ = 28644864. Its totient is φ = 10424304.

The previous prime is 18520339. The next prime is 18520343. The reversal of 18520341 is 14302581.

It is an interprime number because it is at equal distance from previous prime (18520339) and next prime (18520343).

It is not a de Polignac number, because 18520341 - 2¹ = 18520339 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 (18520343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5175 + ... + 7988.

It is an arithmetic number, because the mean of its divisors is an integer number (1790304).

Almost surely, 2^18520341 is an apocalyptic number.

It is an amenable number.

18520341 is a deficient number, since it is larger than the sum of its proper divisors (10124523).

18520341 is a wasteful number, since it uses less digits than its factorization.

18520341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13240.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 18520341 is about 4303.5265771225. The cubic root of 18520341 is about 264.5755207371.

The spelling of 18520341 in words is "eighteen million, five hundred twenty thousand, three hundred forty-one".