2018216 has 8 divisors (see below), whose sum is σ = 3784170. Its totient is φ = 1009104.

The previous prime is 2018183. The next prime is 2018249. The reversal of 2018216 is 6128102.

It is an interprime number because it is at equal distance from previous prime (2018183) and next prime (2018249).

It can be written as a sum of positive squares in only one way, i.e., 1833316 + 184900 = 1354^2 + 430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126131 + ... + 126146.

2^2018216 is an apocalyptic number.

It is an amenable number.

2018216 is a deficient number, since it is larger than the sum of its proper divisors (1765954).

2018216 is a wasteful number, since it uses less digits than its factorization.

2018216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252283 (or 252279 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2018216 is about 1420.6392927130. The cubic root of 2018216 is about 126.3734615545.

The spelling of 2018216 in words is "two million, eighteen thousand, two hundred sixteen".