3138937717 has 4 divisors (see below), whose sum is σ = 3159725536. Its totient is φ = 3118149900.

The previous prime is 3138937709. The next prime is 3138937721. The reversal of 3138937717 is 7177398313.

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.

It is a cyclic number.

It is not a de Polignac number, because 3138937717 - 2³ = 3138937709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138937727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10393683 + ... + 10393984.

It is an arithmetic number, because the mean of its divisors is an integer number (789931384).

Almost surely, 2^3138937717 is an apocalyptic number.

It is an amenable number.

3138937717 is a deficient number, since it is larger than the sum of its proper divisors (20787819).

3138937717 is a wasteful number, since it uses less digits than its factorization.

3138937717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20787818.

The product of its digits is 666792, while the sum is 49.

The square root of 3138937717 is about 56026.2234761544. The cubic root of 3138937717 is about 1464.1791993821.

The spelling of 3138937717 in words is "three billion, one hundred thirty-eight million, nine hundred thirty-seven thousand, seven hundred seventeen".