3138517439 has 2 divisors, whose sum is σ = 3138517440. Its totient is φ = 3138517438.

The previous prime is 3138517427. The next prime is 3138517511. The reversal of 3138517439 is 9347158313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3138517439 - 2⁸ = 3138517183 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3138517439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3138517409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569258719 + 1569258720.

It is an arithmetic number, because the mean of its divisors is an integer number (1569258720).

Almost surely, 2^3138517439 is an apocalyptic number.

3138517439 is a deficient number, since it is larger than the sum of its proper divisors (1).

3138517439 is an equidigital number, since it uses as much as digits as its factorization.

3138517439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 3138517439 is about 56022.4726248315. The cubic root of 3138517439 is about 1464.1138492725.

The spelling of 3138517439 in words is "three billion, one hundred thirty-eight million, five hundred seventeen thousand, four hundred thirty-nine".