1363012563 has 16 divisors (see below), whose sum is σ = 1986625152. Its totient is φ = 824376000.

The previous prime is 1363012537. The next prime is 1363012577. The reversal of 1363012563 is 3652103631.

It is a happy number.

It is not a de Polignac number, because 1363012563 - 2⁵ = 1363012531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1363012563.

It is not an unprimeable number, because it can be changed into a prime (1363012583) 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 in 15 ways as a sum of consecutive naturals, for example, 25858 + ... + 58263.

It is an arithmetic number, because the mean of its divisors is an integer number (124164072).

Almost surely, 2^1363012563 is an apocalyptic number.

1363012563 is a deficient number, since it is larger than the sum of its proper divisors (623612589).

1363012563 is a wasteful number, since it uses less digits than its factorization.

1363012563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84626.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 1363012563 is about 36919.0000270863. Note that the first 4 decimals coincide. The cubic root of 1363012563 is about 1108.7491151864.

The spelling of 1363012563 in words is "one billion, three hundred sixty-three million, twelve thousand, five hundred sixty-three".