18344011 has 4 divisors (see below), whose sum is σ = 20964592. Its totient is φ = 15723432.

The previous prime is 18343943. The next prime is 18344017. The reversal of 18344011 is 11044381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11044381 = 103 ⋅107227.

It is a cyclic number.

It is not a de Polignac number, because 18344011 - 2¹³ = 18335819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18344017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1310280 + ... + 1310293.

It is an arithmetic number, because the mean of its divisors is an integer number (5241148).

Almost surely, 2^18344011 is an apocalyptic number.

18344011 is a deficient number, since it is larger than the sum of its proper divisors (2620581).

18344011 is an equidigital number, since it uses as much as digits as its factorization.

18344011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620580.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 18344011 is about 4282.9908942233. The cubic root of 18344011 is about 263.7331775768.

Adding to 18344011 its reverse (11044381), we get a palindrome (29388392).

The spelling of 18344011 in words is "eighteen million, three hundred forty-four thousand, eleven".