216216183 has 8 divisors (see below), whose sum is σ = 305246448. Its totient is φ = 135665024.

The previous prime is 216216157. The next prime is 216216191. The reversal of 216216183 is 381612612.

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

It is a cyclic number.

It is not a de Polignac number, because 216216183 - 2²⁰ = 215167607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216216183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216216113) 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, 2119716 + ... + 2119817.

It is an arithmetic number, because the mean of its divisors is an integer number (38155806).

Almost surely, 2^216216183 is an apocalyptic number.

216216183 is a deficient number, since it is larger than the sum of its proper divisors (89030265).

216216183 is a wasteful number, since it uses less digits than its factorization.

216216183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239553.

The product of its digits is 3456, while the sum is 30.

The square root of 216216183 is about 14704.2913124026. The cubic root of 216216183 is about 600.2001027019.

Adding to 216216183 its reverse (381612612), we get a palindrome (597828795).

The spelling of 216216183 in words is "two hundred sixteen million, two hundred sixteen thousand, one hundred eighty-three".