218116908 has 48 divisors (see below), whose sum is σ = 567132160. Its totient is φ = 72494352.

The previous prime is 218116901. The next prime is 218116909. The reversal of 218116908 is 809611812.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (218116901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36885 + ... + 42387.

Almost surely, 2^218116908 is an apocalyptic number.

It is an amenable number.

218116908 is an abundant number, since it is smaller than the sum of its proper divisors (349015252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218116908 is a wasteful number, since it uses less digits than its factorization.

218116908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5883 (or 5875 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 218116908 is about 14768.7815340332. The cubic root of 218116908 is about 601.9537313181.

It can be divided in two parts, 218116 and 908, that added together give a square (219024 = 468²).

The spelling of 218116908 in words is "two hundred eighteen million, one hundred sixteen thousand, nine hundred eight".