387878904013 has 2 divisors, whose sum is σ = 387878904014. Its totient is φ = 387878904012.

The previous prime is 387878903999. The next prime is 387878904019. The reversal of 387878904013 is 310409878783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318639928324 + 69238975689 = 564482^2 + 263133^2 .

It is a cyclic number.

It is not a de Polignac number, because 387878904013 - 2³³ = 379288969421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387878904019) 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, 193939452006 + 193939452007.

It is an arithmetic number, because the mean of its divisors is an integer number (193939452007).

Almost surely, 2^387878904013 is an apocalyptic number.

It is an amenable number.

387878904013 is a deficient number, since it is larger than the sum of its proper divisors (1).

387878904013 is an equidigital number, since it uses as much as digits as its factorization.

387878904013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8128512, while the sum is 58.

The spelling of 387878904013 in words is "three hundred eighty-seven billion, eight hundred seventy-eight million, nine hundred four thousand, thirteen".