1012513563 has 12 divisors (see below), whose sum is σ = 1486496128. Its totient is φ = 663942960.

The previous prime is 1012513549. The next prime is 1012513631. The reversal of 1012513563 is 3653152101.

It is not a de Polignac number, because 1012513563 - 2⁶ = 1012513499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012512563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 921595 + ... + 922692.

Almost surely, 2^1012513563 is an apocalyptic number.

1012513563 is a deficient number, since it is larger than the sum of its proper divisors (473982565).

1012513563 is a wasteful number, since it uses less digits than its factorization.

1012513563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844354 (or 1844351 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 1012513563 is about 31820.0182746648. The cubic root of 1012513563 is about 1004.1539088164.

Adding to 1012513563 its reverse (3653152101), we get a palindrome (4665665664).

The spelling of 1012513563 in words is "one billion, twelve million, five hundred thirteen thousand, five hundred sixty-three".