218838387202 has 8 divisors (see below), whose sum is σ = 347566850316. Its totient is φ = 102982770432.

The previous prime is 218838387167. The next prime is 218838387223. The reversal of 218838387202 is 202783838812.

It can be written as a sum of positive squares in 2 ways, for example, as 212853972321 + 5984414881 = 461361^2 + 77359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 218838387202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3218211543 + ... + 3218211610.

Almost surely, 2^218838387202 is an apocalyptic number.

218838387202 is a deficient number, since it is larger than the sum of its proper divisors (128728463114).

218838387202 is a wasteful number, since it uses less digits than its factorization.

218838387202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6436423172.

The product of its (nonzero) digits is 2064384, while the sum is 52.

The spelling of 218838387202 in words is "two hundred eighteen billion, eight hundred thirty-eight million, three hundred eighty-seven thousand, two hundred two".