18344145 has 8 divisors (see below), whose sum is σ = 29350656. Its totient is φ = 9783536.

The previous prime is 18344143. The next prime is 18344167. The reversal of 18344145 is 54144381.

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 18344145 - 2¹ = 18344143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18344141) 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 7 ways as a sum of consecutive naturals, for example, 611457 + ... + 611486.

It is an arithmetic number, because the mean of its divisors is an integer number (3668832).

Almost surely, 2^18344145 is an apocalyptic number.

18344145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18344145 is a deficient number, since it is larger than the sum of its proper divisors (11006511).

18344145 is a wasteful number, since it uses less digits than its factorization.

18344145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222951.

The product of its digits is 7680, while the sum is 30.

The square root of 18344145 is about 4283.0065374687. The cubic root of 18344145 is about 263.7338197512.

The spelling of 18344145 in words is "eighteen million, three hundred forty-four thousand, one hundred forty-five".