1216544214 has 16 divisors (see below), whose sum is σ = 2454621552. Its totient is φ = 401925888.

The previous prime is 1216544213. The next prime is 1216544233. The reversal of 1216544214 is 4124456121.

1216544214 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216544213) 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, 896479 + ... + 897834.

It is an arithmetic number, because the mean of its divisors is an integer number (153413847).

Almost surely, 2^1216544214 is an apocalyptic number.

1216544214 is an abundant number, since it is smaller than the sum of its proper divisors (1238077338).

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

1216544214 is a wasteful number, since it uses less digits than its factorization.

1216544214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794431.

The product of its digits is 7680, while the sum is 30.

The square root of 1216544214 is about 34878.9938788377. The cubic root of 1216544214 is about 1067.5198661719.

The spelling of 1216544214 in words is "one billion, two hundred sixteen million, five hundred forty-four thousand, two hundred fourteen".