218669316 has 12 divisors (see below), whose sum is σ = 510228432. Its totient is φ = 72889768.

The previous prime is 218669287. The next prime is 218669329. The reversal of 218669316 is 613966812.

218669316 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9111210 + ... + 9111233.

It is an arithmetic number, because the mean of its divisors is an integer number (42519036).

Almost surely, 2^218669316 is an apocalyptic number.

It is an amenable number.

218669316 is an abundant number, since it is smaller than the sum of its proper divisors (291559116).

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

218669316 is a wasteful number, since it uses less digits than its factorization.

218669316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18222450 (or 18222448 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 218669316 is about 14787.4715891528. The cubic root of 218669316 is about 602.4614769651.

The spelling of 218669316 in words is "two hundred eighteen million, six hundred sixty-nine thousand, three hundred sixteen".