3665216166 has 64 divisors (see below), whose sum is σ = 7883308800. Its totient is φ = 1132500096.

The previous prime is 3665216161. The next prime is 3665216183. The reversal of 3665216166 is 6616125663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665216161) 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 31 ways as a sum of consecutive naturals, for example, 3304420 + ... + 3305528.

It is an arithmetic number, because the mean of its divisors is an integer number (123176700).

Almost surely, 2^3665216166 is an apocalyptic number.

3665216166 is an abundant number, since it is smaller than the sum of its proper divisors (4218092634).

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

3665216166 is a wasteful number, since it uses less digits than its factorization.

3665216166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733.

The product of its digits is 233280, while the sum is 42.

The square root of 3665216166 is about 60541.0287821408. The cubic root of 3665216166 is about 1541.8183062308.

The spelling of 3665216166 in words is "three billion, six hundred sixty-five million, two hundred sixteen thousand, one hundred sixty-six".