38108906939 has 4 divisors (see below), whose sum is σ = 38109297840. Its totient is φ = 38108516040.

The previous prime is 38108906923. The next prime is 38108906947. The reversal of 38108906939 is 93960980183.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 38108906939 - 2⁴ = 38108906923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38108903939) 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, 83354 + ... + 288384.

It is an arithmetic number, because the mean of its divisors is an integer number (9527324460).

Almost surely, 2^38108906939 is an apocalyptic number.

38108906939 is a deficient number, since it is larger than the sum of its proper divisors (390901).

38108906939 is a wasteful number, since it uses less digits than its factorization.

38108906939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390900.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 38108906939 in words is "thirty-eight billion, one hundred eight million, nine hundred six thousand, nine hundred thirty-nine".