218799842 has 16 divisors (see below), whose sum is σ = 331879680. Its totient is φ = 108177552.

The previous prime is 218799811. The next prime is 218799853. The reversal of 218799842 is 248997812.

218799842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187553 + ... + 188715.

It is an arithmetic number, because the mean of its divisors is an integer number (20742480).

Almost surely, 2^218799842 is an apocalyptic number.

218799842 is a deficient number, since it is larger than the sum of its proper divisors (113079838).

218799842 is a wasteful number, since it uses less digits than its factorization.

218799842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137.

The product of its digits is 580608, while the sum is 50.

The square root of 218799842 is about 14791.8843289150. The cubic root of 218799842 is about 602.5813249727.

The spelling of 218799842 in words is "two hundred eighteen million, seven hundred ninety-nine thousand, eight hundred forty-two".