1166216216 has 32 divisors (see below), whose sum is σ = 2389780800. Its totient is φ = 529134240.

The previous prime is 1166216213. The next prime is 1166216221. The reversal of 1166216216 is 6126126611.

It is a super-2 number, since 2×1166216216² = 2720120524922717312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166216213) 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, 37775 + ... + 61313.

It is an arithmetic number, because the mean of its divisors is an integer number (74680650).

Almost surely, 2^1166216216 is an apocalyptic number.

It is an amenable number.

1166216216 is an abundant number, since it is smaller than the sum of its proper divisors (1223564584).

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

1166216216 is a wasteful number, since it uses less digits than its factorization.

1166216216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24119 (or 24115 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 1166216216 is about 34149.9079940195. The cubic root of 1166216216 is about 1052.5910960547.

The spelling of 1166216216 in words is "one billion, one hundred sixty-six million, two hundred sixteen thousand, two hundred sixteen".