218849398 has 32 divisors (see below), whose sum is σ = 362983680. Its totient is φ = 98503680.

The previous prime is 218849383. The next prime is 218849419. The reversal of 218849398 is 893948812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92640 + ... + 94972.

It is an arithmetic number, because the mean of its divisors is an integer number (11343240).

Almost surely, 2^218849398 is an apocalyptic number.

218849398 is a deficient number, since it is larger than the sum of its proper divisors (144134282).

218849398 is a wasteful number, since it uses less digits than its factorization.

218849398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472.

The product of its digits is 995328, while the sum is 52.

The square root of 218849398 is about 14793.5593418217. The cubic root of 218849398 is about 602.6268144418.

The spelling of 218849398 in words is "two hundred eighteen million, eight hundred forty-nine thousand, three hundred ninety-eight".