2166307916 has 6 divisors (see below), whose sum is σ = 3791038860. Its totient is φ = 1083153956.

The previous prime is 2166307883. The next prime is 2166307919. The reversal of 2166307916 is 6197036612.

It is not an unprimeable number, because it can be changed into a prime (2166307919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270788486 + ... + 270788493.

It is an arithmetic number, because the mean of its divisors is an integer number (631839810).

Almost surely, 2^2166307916 is an apocalyptic number.

It is an amenable number.

2166307916 is a deficient number, since it is larger than the sum of its proper divisors (1624730944).

2166307916 is a wasteful number, since it uses less digits than its factorization.

2166307916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541576983 (or 541576981 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 2166307916 is about 46543.6130527057. The cubic root of 2166307916 is about 1293.9179237764.

The spelling of 2166307916 in words is "two billion, one hundred sixty-six million, three hundred seven thousand, nine hundred sixteen".