38668129 has 16 divisors (see below), whose sum is σ = 42015744. Its totient is φ = 35481600.

The previous prime is 38668127. The next prime is 38668139. The reversal of 38668129 is 92186683.

It is a cyclic number.

It is not a de Polignac number, because 38668129 - 2¹ = 38668127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38668121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137469 + ... + 137749.

It is an arithmetic number, because the mean of its divisors is an integer number (2625984).

Almost surely, 2^38668129 is an apocalyptic number.

It is an amenable number.

38668129 is a deficient number, since it is larger than the sum of its proper divisors (3347615).

38668129 is a wasteful number, since it uses less digits than its factorization.

38668129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528.

The product of its digits is 124416, while the sum is 43.

The square root of 38668129 is about 6218.3702848898. The cubic root of 38668129 is about 338.1564842676.

The spelling of 38668129 in words is "thirty-eight million, six hundred sixty-eight thousand, one hundred twenty-nine".