18034543 has 4 divisors (see below), whose sum is σ = 18166320. Its totient is φ = 17902768.

The previous prime is 18034537. The next prime is 18034573. The reversal of 18034543 is 34543081.

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

It is a cyclic number.

It is not a de Polignac number, because 18034543 - 2¹⁷ = 17903471 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 (18034573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65683 + ... + 65956.

It is an arithmetic number, because the mean of its divisors is an integer number (4541580).

Almost surely, 2^18034543 is an apocalyptic number.

18034543 is a deficient number, since it is larger than the sum of its proper divisors (131777).

18034543 is a wasteful number, since it uses less digits than its factorization.

18034543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131776.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 18034543 is about 4246.7096674955. The cubic root of 18034543 is about 262.2416772395.

The spelling of 18034543 in words is "eighteen million, thirty-four thousand, five hundred forty-three".