216219198 has 16 divisors (see below), whose sum is σ = 465703056. Its totient is φ = 66528960.

The previous prime is 216219193. The next prime is 216219217. The reversal of 216219198 is 891912612.

216219198 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216219191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1385943 + ... + 1386098.

It is an arithmetic number, because the mean of its divisors is an integer number (29106441).

Almost surely, 2^216219198 is an apocalyptic number.

216219198 is an abundant number, since it is smaller than the sum of its proper divisors (249483858).

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

216219198 is a wasteful number, since it uses less digits than its factorization.

216219198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772059.

The product of its digits is 15552, while the sum is 39.

The square root of 216219198 is about 14704.3938331371. The cubic root of 216219198 is about 600.2028924944.

The spelling of 216219198 in words is "two hundred sixteen million, two hundred nineteen thousand, one hundred ninety-eight".