38388385169 has 2 divisors, whose sum is σ = 38388385170. Its totient is φ = 38388385168.

The previous prime is 38388385163. The next prime is 38388385193. The reversal of 38388385169 is 96158388383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35452370944 + 2936014225 = 188288^2 + 54185^2 .

It is a cyclic number.

It is not a de Polignac number, because 38388385169 - 2²⁰ = 38387336593 is a prime.

It is a super-2 number, since 2×38388385169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38388385163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19194192584 + 19194192585.

It is an arithmetic number, because the mean of its divisors is an integer number (19194192585).

Almost surely, 2^38388385169 is an apocalyptic number.

It is an amenable number.

38388385169 is a deficient number, since it is larger than the sum of its proper divisors (1).

38388385169 is an equidigital number, since it uses as much as digits as its factorization.

38388385169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29859840, while the sum is 62.

The spelling of 38388385169 in words is "thirty-eight billion, three hundred eighty-eight million, three hundred eighty-five thousand, one hundred sixty-nine".