1389026252633 has 2 divisors, whose sum is σ = 1389026252634. Its totient is φ = 1389026252632.

The previous prime is 1389026252609. The next prime is 1389026252671. The reversal of 1389026252633 is 3362526209831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1388551143424 + 475109209 = 1178368^2 + 21797^2 .

It is a cyclic number.

It is not a de Polignac number, because 1389026252633 - 2⁸ = 1389026252377 is a prime.

It is not a weakly prime, because it can be changed into another prime (1389026252533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694513126316 + 694513126317.

It is an arithmetic number, because the mean of its divisors is an integer number (694513126317).

Almost surely, 2^{1389026252633} is an apocalyptic number.

It is an amenable number.

1389026252633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389026252633 is an equidigital number, since it uses as much as digits as its factorization.

1389026252633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 50.

The spelling of 1389026252633 in words is "one trillion, three hundred eighty-nine billion, twenty-six million, two hundred fifty-two thousand, six hundred thirty-three".