1138306638439 has 2 divisors, whose sum is σ = 1138306638440. Its totient is φ = 1138306638438.

The previous prime is 1138306638431. The next prime is 1138306638449. The reversal of 1138306638439 is 9348366038311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1138306638439 - 2³ = 1138306638431 is a prime.

It is a super-2 number, since 2×1138306638439² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1138306638439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138306638431) 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 as a sum of consecutive naturals, namely, 569153319219 + 569153319220.

It is an arithmetic number, because the mean of its divisors is an integer number (569153319220).

Almost surely, 2^{1138306638439} is an apocalyptic number.

1138306638439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138306638439 is an equidigital number, since it uses as much as digits as its factorization.

1138306638439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 55.

The spelling of 1138306638439 in words is "one trillion, one hundred thirty-eight billion, three hundred six million, six hundred thirty-eight thousand, four hundred thirty-nine".