218502801 has 12 divisors (see below), whose sum is σ = 344307600. Its totient is φ = 132425880.

The previous prime is 218502773. The next prime is 218502803. The reversal of 218502801 is 108205812.

It is not a de Polignac number, because 218502801 - 2¹⁹ = 217978513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (218502803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1103451 + ... + 1103648.

It is an arithmetic number, because the mean of its divisors is an integer number (28692300).

Almost surely, 2^218502801 is an apocalyptic number.

It is an amenable number.

218502801 is a deficient number, since it is larger than the sum of its proper divisors (125804799).

218502801 is a wasteful number, since it uses less digits than its factorization.

218502801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207116 (or 2207113 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 218502801 is about 14781.8402440292. The cubic root of 218502801 is about 602.3085148738.

The spelling of 218502801 in words is "two hundred eighteen million, five hundred two thousand, eight hundred one".