1538802129533 has 2 divisors, whose sum is σ = 1538802129534. Its totient is φ = 1538802129532.

The previous prime is 1538802129523. The next prime is 1538802129539. The reversal of 1538802129533 is 3359212088351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1221880419769 + 316921709764 = 1105387^2 + 562958^2 .

It is a cyclic number.

It is not a de Polignac number, because 1538802129533 - 2³⁴ = 1521622260349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1538802129539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769401064766 + 769401064767.

It is an arithmetic number, because the mean of its divisors is an integer number (769401064767).

Almost surely, 2^{1538802129533} is an apocalyptic number.

It is an amenable number.

1538802129533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538802129533 is an equidigital number, since it uses as much as digits as its factorization.

1538802129533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 1538802129533 in words is "one trillion, five hundred thirty-eight billion, eight hundred two million, one hundred twenty-nine thousand, five hundred thirty-three".