20382943829 has 2 divisors, whose sum is σ = 20382943830. Its totient is φ = 20382943828.

The previous prime is 20382943783. The next prime is 20382943831. The reversal of 20382943829 is 92834928302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19625208100 + 757735729 = 140090^2 + 27527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20382943829 is a prime.

Together with 20382943831, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20382943859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10191471914 + 10191471915.

It is an arithmetic number, because the mean of its divisors is an integer number (10191471915).

Almost surely, 2^20382943829 is an apocalyptic number.

It is an amenable number.

20382943829 is a deficient number, since it is larger than the sum of its proper divisors (1).

20382943829 is an equidigital number, since it uses as much as digits as its factorization.

20382943829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 20382943829 in words is "twenty billion, three hundred eighty-two million, nine hundred forty-three thousand, eight hundred twenty-nine".