1563250089 has 4 divisors (see below), whose sum is σ = 2084333456. Its totient is φ = 1042166724.

The previous prime is 1563250081. The next prime is 1563250103. The reversal of 1563250089 is 9800523651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1563250089 - 2³ = 1563250081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1563250081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260541679 + ... + 260541684.

It is an arithmetic number, because the mean of its divisors is an integer number (521083364).

Almost surely, 2^1563250089 is an apocalyptic number.

It is an amenable number.

1563250089 is a deficient number, since it is larger than the sum of its proper divisors (521083367).

1563250089 is an equidigital number, since it uses as much as digits as its factorization.

1563250089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521083366.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 1563250089 is about 39537.9575724392. The cubic root of 1563250089 is about 1160.5828642833.

The spelling of 1563250089 in words is "one billion, five hundred sixty-three million, two hundred fifty thousand, eighty-nine".