2171996334 has 24 divisors (see below), whose sum is σ = 4722992040. Its totient is φ = 721383408.

The previous prime is 2171996327. The next prime is 2171996357. The reversal of 2171996334 is 4336991712.

2171996334 is a `hidden beast` number, since 2 + 1 + 7 + 1 + 9 + 9 + 633 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2171996334.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 212824 + ... + 222795.

It is an arithmetic number, because the mean of its divisors is an integer number (196791335).

Almost surely, 2^2171996334 is an apocalyptic number.

2171996334 is an abundant number, since it is smaller than the sum of its proper divisors (2550995706).

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

2171996334 is a wasteful number, since it uses less digits than its factorization.

2171996334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435904 (or 435901 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 2171996334 is about 46604.6814601280. The cubic root of 2171996334 is about 1295.0494823646.

The spelling of 2171996334 in words is "two billion, one hundred seventy-one million, nine hundred ninety-six thousand, three hundred thirty-four".