2166208082 has 8 divisors (see below), whose sum is σ = 3268094796. Its totient is φ = 1076843152.

The previous prime is 2166208043. The next prime is 2166208087. The reversal of 2166208082 is 2808026612.

It can be written as a sum of positive squares in 2 ways, for example, as 2063975761 + 102232321 = 45431^2 + 10111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2166208087) 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, 3130013 + ... + 3130704.

Almost surely, 2^2166208082 is an apocalyptic number.

2166208082 is a deficient number, since it is larger than the sum of its proper divisors (1101886714).

2166208082 is a wasteful number, since it uses less digits than its factorization.

2166208082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6260892.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 2166208082 is about 46542.5405623715. The cubic root of 2166208082 is about 1293.8980467950.

The spelling of 2166208082 in words is "two billion, one hundred sixty-six million, two hundred eight thousand, eighty-two".