42383838389 has 2 divisors, whose sum is σ = 42383838390. Its totient is φ = 42383838388.

The previous prime is 42383838323. The next prime is 42383838391. The reversal of 42383838389 is 98383838324.

42383838389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41497764100 + 886074289 = 203710^2 + 29767^2 .

It is a cyclic number.

It is not a de Polignac number, because 42383838389 - 2²⁸ = 42115402933 is a prime.

It is a Sophie Germain prime.

Together with 42383838391, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42383837389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21191919194 + 21191919195.

It is an arithmetic number, because the mean of its divisors is an integer number (21191919195).

Almost surely, 2^42383838389 is an apocalyptic number.

It is an amenable number.

42383838389 is a deficient number, since it is larger than the sum of its proper divisors (1).

42383838389 is an equidigital number, since it uses as much as digits as its factorization.

42383838389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23887872, while the sum is 59.

The spelling of 42383838389 in words is "forty-two billion, three hundred eighty-three million, eight hundred thirty-eight thousand, three hundred eighty-nine".