2166738312 has 16 divisors (see below), whose sum is σ = 5416845840. Its totient is φ = 722246096.

The previous prime is 2166738289. The next prime is 2166738313. The reversal of 2166738312 is 2138376612.

It is not an unprimeable number, because it can be changed into a prime (2166738313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45140358 + ... + 45140405.

It is an arithmetic number, because the mean of its divisors is an integer number (338552865).

Almost surely, 2^2166738312 is an apocalyptic number.

It is an amenable number.

2166738312 is an abundant number, since it is smaller than the sum of its proper divisors (3250107528).

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

2166738312 is a wasteful number, since it uses less digits than its factorization.

2166738312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90280772 (or 90280768 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 2166738312 is about 46548.2364005340. The cubic root of 2166738312 is about 1294.0036087673.

The spelling of 2166738312 in words is "two billion, one hundred sixty-six million, seven hundred thirty-eight thousand, three hundred twelve".