18345211 has 8 divisors (see below), whose sum is σ = 19108224. Its totient is φ = 17592960.

The previous prime is 18345209. The next prime is 18345263. The reversal of 18345211 is 11254381.

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 18345211 - 2¹ = 18345209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18345281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885 + ... + 6121.

It is an arithmetic number, because the mean of its divisors is an integer number (2388528).

Almost surely, 2^18345211 is an apocalyptic number.

18345211 is a deficient number, since it is larger than the sum of its proper divisors (763013).

18345211 is a wasteful number, since it uses less digits than its factorization.

18345211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5381.

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

The square root of 18345211 is about 4283.1309809531. The cubic root of 18345211 is about 263.7389282805.

Adding to 18345211 its reverse (11254381), we get a palindrome (29599592).

The spelling of 18345211 in words is "eighteen million, three hundred forty-five thousand, two hundred eleven".