218585043 has 6 divisors (see below), whose sum is σ = 315733964. Its totient is φ = 145723356.

The previous prime is 218584991. The next prime is 218585047. The reversal of 218585043 is 340585812.

It is a happy number.

It is not a de Polignac number, because 218585043 - 2²² = 214390739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 218584989 and 218585007.

It is not an unprimeable number, because it can be changed into a prime (218585047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12143605 + ... + 12143622.

Almost surely, 2^218585043 is an apocalyptic number.

218585043 is a deficient number, since it is larger than the sum of its proper divisors (97148921).

218585043 is a wasteful number, since it uses less digits than its factorization.

218585043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24287233 (or 24287230 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 218585043 is about 14784.6218416299. The cubic root of 218585043 is about 602.3840727814.

The spelling of 218585043 in words is "two hundred eighteen million, five hundred eighty-five thousand, forty-three".