38538705137 has 2 divisors, whose sum is σ = 38538705138. Its totient is φ = 38538705136.

The previous prime is 38538705131. The next prime is 38538705211. The reversal of 38538705137 is 73150783583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30177248656 + 8361456481 = 173716^2 + 91441^2 .

It is a cyclic number.

It is not a de Polignac number, because 38538705137 - 2⁸ = 38538704881 is a prime.

It is not a weakly prime, because it can be changed into another prime (38538705131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19269352568 + 19269352569.

It is an arithmetic number, because the mean of its divisors is an integer number (19269352569).

Almost surely, 2^38538705137 is an apocalyptic number.

It is an amenable number.

38538705137 is a deficient number, since it is larger than the sum of its proper divisors (1).

38538705137 is an equidigital number, since it uses as much as digits as its factorization.

38538705137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 38538705137 in words is "thirty-eight billion, five hundred thirty-eight million, seven hundred five thousand, one hundred thirty-seven".