18162343 has 4 divisors (see below), whose sum is σ = 18329080. Its totient is φ = 17995608.

The previous prime is 18162329. The next prime is 18162359. The reversal of 18162343 is 34326181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18162343 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 (18162743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83205 + ... + 83422.

It is an arithmetic number, because the mean of its divisors is an integer number (4582270).

Almost surely, 2^18162343 is an apocalyptic number.

18162343 is a deficient number, since it is larger than the sum of its proper divisors (166737).

18162343 is a wasteful number, since it uses less digits than its factorization.

18162343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166736.

The product of its digits is 3456, while the sum is 28.

The square root of 18162343 is about 4261.7300477623. The cubic root of 18162343 is about 262.8596696270.

The spelling of 18162343 in words is "eighteen million, one hundred sixty-two thousand, three hundred forty-three".