18215341 has 4 divisors (see below), whose sum is σ = 18237312. Its totient is φ = 18193372.

The previous prime is 18215299. The next prime is 18215371. The reversal of 18215341 is 14351281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18215341 - 2⁷ = 18215213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18215371) 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, 9691 + ... + 11416.

It is an arithmetic number, because the mean of its divisors is an integer number (4559328).

Almost surely, 2^18215341 is an apocalyptic number.

It is an amenable number.

18215341 is a deficient number, since it is larger than the sum of its proper divisors (21971).

18215341 is an equidigital number, since it uses as much as digits as its factorization.

18215341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21970.

The product of its digits is 960, while the sum is 25.

The square root of 18215341 is about 4267.9434157449. The cubic root of 18215341 is about 263.1150975449.

The spelling of 18215341 in words is "eighteen million, two hundred fifteen thousand, three hundred forty-one".