1563313901 has 8 divisors (see below), whose sum is σ = 1647871680. Its totient is φ = 1478983968.

The previous prime is 1563313879. The next prime is 1563313903. The reversal of 1563313901 is 1093133651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1563313901 - 2⁶ = 1563313837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563313903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42776 + ... + 70401.

It is an arithmetic number, because the mean of its divisors is an integer number (205983960).

Almost surely, 2^1563313901 is an apocalyptic number.

It is an amenable number.

1563313901 is a deficient number, since it is larger than the sum of its proper divisors (84557779).

1563313901 is a wasteful number, since it uses less digits than its factorization.

1563313901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113923.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 1563313901 is about 39538.7645355795. The cubic root of 1563313901 is about 1160.5986557651.

The spelling of 1563313901 in words is "one billion, five hundred sixty-three million, three hundred thirteen thousand, nine hundred one".