2191326006 has 16 divisors (see below), whose sum is σ = 4390527024. Its totient is φ = 729129504.

The previous prime is 2191325971. The next prime is 2191326013. The reversal of 2191326006 is 6006231912.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 324505 + ... + 331188.

It is an arithmetic number, because the mean of its divisors is an integer number (274407939).

Almost surely, 2^2191326006 is an apocalyptic number.

2191326006 is an abundant number, since it is smaller than the sum of its proper divisors (2199201018).

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

2191326006 is a wasteful number, since it uses less digits than its factorization.

2191326006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656255.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 2191326006 is about 46811.6011903032. The cubic root of 2191326006 is about 1298.8799042226.

Adding to 2191326006 its reverse (6006231912), we get a palindrome (8197557918).

The spelling of 2191326006 in words is "two billion, one hundred ninety-one million, three hundred twenty-six thousand, six".