1438640533489 has 2 divisors, whose sum is σ = 1438640533490. Its totient is φ = 1438640533488.

The previous prime is 1438640533469. The next prime is 1438640533513. The reversal of 1438640533489 is 9843350468341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1432729999089 + 5910534400 = 1196967^2 + 76880^2 .

It is a cyclic number.

It is not a de Polignac number, because 1438640533489 - 2⁵ = 1438640533457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1438640533439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719320266744 + 719320266745.

It is an arithmetic number, because the mean of its divisors is an integer number (719320266745).

Almost surely, 2^{1438640533489} is an apocalyptic number.

It is an amenable number.

1438640533489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438640533489 is an equidigital number, since it uses as much as digits as its factorization.

1438640533489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29859840, while the sum is 58.

The spelling of 1438640533489 in words is "one trillion, four hundred thirty-eight billion, six hundred forty million, five hundred thirty-three thousand, four hundred eighty-nine".