38639227129 has 2 divisors, whose sum is σ = 38639227130. Its totient is φ = 38639227128.

The previous prime is 38639227117. The next prime is 38639227163. The reversal of 38639227129 is 92172293683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38228070400 + 411156729 = 195520^2 + 20277^2 .

It is an emirp because it is prime and its reverse (92172293683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38639227129 - 2⁵ = 38639227097 is a prime.

It is not a weakly prime, because it can be changed into another prime (38639221129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19319613564 + 19319613565.

It is an arithmetic number, because the mean of its divisors is an integer number (19319613565).

Almost surely, 2^38639227129 is an apocalyptic number.

It is an amenable number.

38639227129 is a deficient number, since it is larger than the sum of its proper divisors (1).

38639227129 is an equidigital number, since it uses as much as digits as its factorization.

38639227129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 52.

The spelling of 38639227129 in words is "thirty-eight billion, six hundred thirty-nine million, two hundred twenty-seven thousand, one hundred twenty-nine".