1563478013 has 2 divisors, whose sum is σ = 1563478014. Its totient is φ = 1563478012.

The previous prime is 1563478003. The next prime is 1563478039. The reversal of 1563478013 is 3108743651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1271136409 + 292341604 = 35653^2 + 17098^2 .

It is a cyclic number.

It is not a de Polignac number, because 1563478013 - 2⁴ = 1563477997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1563478003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781739006 + 781739007.

It is an arithmetic number, because the mean of its divisors is an integer number (781739007).

Almost surely, 2^1563478013 is an apocalyptic number.

It is an amenable number.

1563478013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1563478013 is an equidigital number, since it uses as much as digits as its factorization.

1563478013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1563478013 is about 39540.8398115164. The cubic root of 1563478013 is about 1160.6392663983.

The spelling of 1563478013 in words is "one billion, five hundred sixty-three million, four hundred seventy-eight thousand, thirteen".