218137016 has 32 divisors (see below), whose sum is σ = 413683200. Its totient is φ = 107829600.

The previous prime is 218136977. The next prime is 218137019. The reversal of 218137016 is 610731812.

It is a self number, because there is not a number n which added to its sum of digits gives 218137016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218137019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433421 + ... + 433923.

It is an arithmetic number, because the mean of its divisors is an integer number (12927600).

Almost surely, 2^218137016 is an apocalyptic number.

It is an amenable number.

218137016 is a deficient number, since it is larger than the sum of its proper divisors (195546184).

218137016 is a wasteful number, since it uses less digits than its factorization.

218137016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 218137016 is about 14769.4622786342. The cubic root of 218137016 is about 601.9722286060.

Adding to 218137016 its reverse (610731812), we get a palindrome (828868828).

The spelling of 218137016 in words is "two hundred eighteen million, one hundred thirty-seven thousand, sixteen".