2171606382 has 64 divisors (see below), whose sum is σ = 5386993920. Its totient is φ = 642751200.

The previous prime is 2171606357. The next prime is 2171606383. The reversal of 2171606382 is 2836061712.

2171606382 is a `hidden beast` number, since 2 + 1 + 7 + 16 + 0 + 638 + 2 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171606383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16969 + ... + 68052.

It is an arithmetic number, because the mean of its divisors is an integer number (84171780).

Almost surely, 2^2171606382 is an apocalyptic number.

2171606382 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2171606382 is an abundant number, since it is smaller than the sum of its proper divisors (3215387538).

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

2171606382 is a wasteful number, since it uses less digits than its factorization.

2171606382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85086 (or 85080 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2171606382 is about 46600.4976582869. The cubic root of 2171606382 is about 1294.9719749653.

The spelling of 2171606382 in words is "two billion, one hundred seventy-one million, six hundred six thousand, three hundred eighty-two".