38038537129 has 4 divisors (see below), whose sum is σ = 38394037584. Its totient is φ = 37683036676.

The previous prime is 38038537093. The next prime is 38038537151. The reversal of 38038537129 is 92173583083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92173583083 = 313 ⋅294484291.

It is a cyclic number.

It is not a de Polignac number, because 38038537129 - 2²³ = 38030148521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38038537169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177750067 + ... + 177750280.

It is an arithmetic number, because the mean of its divisors is an integer number (9598509396).

Almost surely, 2^38038537129 is an apocalyptic number.

It is an amenable number.

38038537129 is a deficient number, since it is larger than the sum of its proper divisors (355500455).

38038537129 is a wasteful number, since it uses less digits than its factorization.

38038537129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355500454.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 38038537129 in words is "thirty-eight billion, thirty-eight million, five hundred thirty-seven thousand, one hundred twenty-nine".