2166851682 has 32 divisors (see below), whose sum is σ = 4906085760. Its totient is φ = 708654960.

The previous prime is 2166851651. The next prime is 2166851707. The reversal of 2166851682 is 2861586612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375694 + ... + 381417.

It is an arithmetic number, because the mean of its divisors is an integer number (153315180).

Almost surely, 2^2166851682 is an apocalyptic number.

2166851682 is an abundant number, since it is smaller than the sum of its proper divisors (2739234078).

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

2166851682 is a wasteful number, since it uses less digits than its factorization.

2166851682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757175 (or 757169 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 2166851682 is about 46549.4541536203. The cubic root of 2166851682 is about 1294.0261770411.

The spelling of 2166851682 in words is "two billion, one hundred sixty-six million, eight hundred fifty-one thousand, six hundred eighty-two".