38725646329 has 2 divisors, whose sum is σ = 38725646330. Its totient is φ = 38725646328.

The previous prime is 38725646317. The next prime is 38725646353. The reversal of 38725646329 is 92364652783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35239924729 + 3485721600 = 187723^2 + 59040^2 .

It is a cyclic number.

It is not a de Polignac number, because 38725646329 - 2¹¹ = 38725644281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38725646329.

It is not a weakly prime, because it can be changed into another prime (38725646429) 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, 19362823164 + 19362823165.

It is an arithmetic number, because the mean of its divisors is an integer number (19362823165).

Almost surely, 2^38725646329 is an apocalyptic number.

It is an amenable number.

38725646329 is a deficient number, since it is larger than the sum of its proper divisors (1).

38725646329 is an equidigital number, since it uses as much as digits as its factorization.

38725646329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 55.

The spelling of 38725646329 in words is "thirty-eight billion, seven hundred twenty-five million, six hundred forty-six thousand, three hundred twenty-nine".