218485085 has 64 divisors (see below), whose sum is σ = 344064000. Its totient is φ = 129330432.

The previous prime is 218485079. The next prime is 218485097. The reversal of 218485085 is 580584812.

It is a happy number.

218485085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 218485085 - 2²² = 214290781 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1097816 + ... + 1098014.

It is an arithmetic number, because the mean of its divisors is an integer number (5376000).

Almost surely, 2^218485085 is an apocalyptic number.

It is an amenable number.

218485085 is a deficient number, since it is larger than the sum of its proper divisors (125578915).

218485085 is a wasteful number, since it uses less digits than its factorization.

218485085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370.

The product of its (nonzero) digits is 102400, while the sum is 41.

The square root of 218485085 is about 14781.2409830839. The cubic root of 218485085 is about 602.2922362327.

The spelling of 218485085 in words is "two hundred eighteen million, four hundred eighty-five thousand, eighty-five".