38128429187 has 2 divisors, whose sum is σ = 38128429188. Its totient is φ = 38128429186.

The previous prime is 38128429181. The next prime is 38128429259. The reversal of 38128429187 is 78192482183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38128429187 - 2⁶ = 38128429123 is a prime.

It is a super-2 number, since 2×38128429187² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38128429181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19064214593 + 19064214594.

It is an arithmetic number, because the mean of its divisors is an integer number (19064214594).

Almost surely, 2^38128429187 is an apocalyptic number.

38128429187 is a deficient number, since it is larger than the sum of its proper divisors (1).

38128429187 is an equidigital number, since it uses as much as digits as its factorization.

38128429187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1548288, while the sum is 53.

The spelling of 38128429187 in words is "thirty-eight billion, one hundred twenty-eight million, four hundred twenty-nine thousand, one hundred eighty-seven".