18842043 has 16 divisors (see below), whose sum is σ = 27532800. Its totient is φ = 11366880.

The previous prime is 18842029. The next prime is 18842071. The reversal of 18842043 is 34024881.

It is not a de Polignac number, because 18842043 - 2¹⁰ = 18841019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18842043.

It is not an unprimeable number, because it can be changed into a prime (18842003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6693 + ... + 9081.

It is an arithmetic number, because the mean of its divisors is an integer number (1720800).

Almost surely, 2^18842043 is an apocalyptic number.

18842043 is a deficient number, since it is larger than the sum of its proper divisors (8690757).

18842043 is a wasteful number, since it uses less digits than its factorization.

18842043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 18842043 is about 4340.7422176397. The cubic root of 18842043 is about 266.0986452682.

The spelling of 18842043 in words is "eighteen million, eight hundred forty-two thousand, forty-three".