380878878089 has 2 divisors, whose sum is σ = 380878878090. Its totient is φ = 380878878088.

The previous prime is 380878878067. The next prime is 380878878091. The reversal of 380878878089 is 980878878083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 347519682064 + 33359196025 = 589508^2 + 182645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-380878878089 is a prime.

Together with 380878878091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (380878878049) 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, 190439439044 + 190439439045.

It is an arithmetic number, because the mean of its divisors is an integer number (190439439045).

Almost surely, 2^380878878089 is an apocalyptic number.

It is an amenable number.

380878878089 is a deficient number, since it is larger than the sum of its proper divisors (1).

380878878089 is an equidigital number, since it uses as much as digits as its factorization.

380878878089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 346816512, while the sum is 74.

The spelling of 380878878089 in words is "three hundred eighty billion, eight hundred seventy-eight million, eight hundred seventy-eight thousand, eighty-nine".