18474543 has 24 divisors (see below), whose sum is σ = 28753920. Its totient is φ = 11396880.

The previous prime is 18474541. The next prime is 18474553. The reversal of 18474543 is 34547481.

It is not a de Polignac number, because 18474543 - 2¹ = 18474541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18474498 and 18474507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18474541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4978 + ... + 7856.

It is an arithmetic number, because the mean of its divisors is an integer number (1198080).

Almost surely, 2^18474543 is an apocalyptic number.

18474543 is a deficient number, since it is larger than the sum of its proper divisors (10279377).

18474543 is a wasteful number, since it uses less digits than its factorization.

18474543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939 (or 2936 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 18474543 is about 4298.2022986360. The cubic root of 18474543 is about 264.3572556540.

The spelling of 18474543 in words is "eighteen million, four hundred seventy-four thousand, five hundred forty-three".