18242343 has 24 divisors (see below), whose sum is σ = 31887648. Its totient is φ = 9810432.

The previous prime is 18242333. The next prime is 18242359. The reversal of 18242343 is 34324281.

It is not a de Polignac number, because 18242343 - 2⁸ = 18242087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18242333) 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 23 ways as a sum of consecutive naturals, for example, 7446 + ... + 9587.

It is an arithmetic number, because the mean of its divisors is an integer number (1328652).

Almost surely, 2^18242343 is an apocalyptic number.

18242343 is a deficient number, since it is larger than the sum of its proper divisors (13645305).

18242343 is a wasteful number, since it uses less digits than its factorization.

18242343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17063 (or 17060 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 18242343 is about 4271.1055945738. The cubic root of 18242343 is about 263.2450452662.

The spelling of 18242343 in words is "eighteen million, two hundred forty-two thousand, three hundred forty-three".