18289043 has 4 divisors (see below), whose sum is σ = 18302400. Its totient is φ = 18275688.

The previous prime is 18289027. The next prime is 18289069. The reversal of 18289043 is 34098281.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34098281 = 7 ⋅4871183.

It is a cyclic number.

It is not a de Polignac number, because 18289043 - 2⁴ = 18289027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18288994 and 18289012.

It is not an unprimeable number, because it can be changed into a prime (18289003) 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, 4355 + ... + 7452.

It is an arithmetic number, because the mean of its divisors is an integer number (4575600).

Almost surely, 2^18289043 is an apocalyptic number.

18289043 is a deficient number, since it is larger than the sum of its proper divisors (13357).

18289043 is a wasteful number, since it uses less digits than its factorization.

18289043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13356.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 18289043 is about 4276.5690687746. The cubic root of 18289043 is about 263.4694877096.

The spelling of 18289043 in words is "eighteen million, two hundred eighty-nine thousand, forty-three".