2071681823 has 2 divisors, whose sum is σ = 2071681824. Its totient is φ = 2071681822.

The previous prime is 2071681813. The next prime is 2071681877. The reversal of 2071681823 is 3281861702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2071681823 - 2⁸ = 2071681567 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2071681813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1035840911 + 1035840912.

It is an arithmetic number, because the mean of its divisors is an integer number (1035840912).

Almost surely, 2^2071681823 is an apocalyptic number.

2071681823 is a deficient number, since it is larger than the sum of its proper divisors (1).

2071681823 is an equidigital number, since it uses as much as digits as its factorization.

2071681823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 2071681823 is about 45515.7315990856. The cubic root of 2071681823 is about 1274.7969581584.

The spelling of 2071681823 in words is "two billion, seventy-one million, six hundred eighty-one thousand, eight hundred twenty-three".