389148821251 has 2 divisors, whose sum is σ = 389148821252. Its totient is φ = 389148821250.

The previous prime is 389148821249. The next prime is 389148821293. The reversal of 389148821251 is 152128841983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389148821251 - 2¹ = 389148821249 is a prime.

Together with 389148821249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (389148821051) 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, 194574410625 + 194574410626.

It is an arithmetic number, because the mean of its divisors is an integer number (194574410626).

Almost surely, 2^389148821251 is an apocalyptic number.

389148821251 is a deficient number, since it is larger than the sum of its proper divisors (1).

389148821251 is an equidigital number, since it uses as much as digits as its factorization.

389148821251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1105920, while the sum is 52.

The spelling of 389148821251 in words is "three hundred eighty-nine billion, one hundred forty-eight million, eight hundred twenty-one thousand, two hundred fifty-one".