1563230438893 has 2 divisors, whose sum is σ = 1563230438894. Its totient is φ = 1563230438892.

The previous prime is 1563230438851. The next prime is 1563230438947. The reversal of 1563230438893 is 3988340323651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 900044971849 + 663185467044 = 948707^2 + 814362^2 .

It is a cyclic number.

It is not a de Polignac number, because 1563230438893 - 2¹³ = 1563230430701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1563230438993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781615219446 + 781615219447.

It is an arithmetic number, because the mean of its divisors is an integer number (781615219447).

Almost surely, 2^{1563230438893} is an apocalyptic number.

It is an amenable number.

1563230438893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1563230438893 is an equidigital number, since it uses as much as digits as its factorization.

1563230438893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 1563230438893 in words is "one trillion, five hundred sixty-three billion, two hundred thirty million, four hundred thirty-eight thousand, eight hundred ninety-three".