1243513568 has 48 divisors (see below), whose sum is σ = 2710641024. Its totient is φ = 556786560.

The previous prime is 1243513549. The next prime is 1243513573. The reversal of 1243513568 is 8653153421.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2780 + ... + 49947.

It is an arithmetic number, because the mean of its divisors is an integer number (56471688).

Almost surely, 2^1243513568 is an apocalyptic number.

It is an amenable number.

1243513568 is an abundant number, since it is smaller than the sum of its proper divisors (1467127456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243513568 is a wasteful number, since it uses less digits than its factorization.

1243513568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52815 (or 52807 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 1243513568 is about 35263.4877458257. The cubic root of 1243513568 is about 1075.3508335346.

Adding to 1243513568 its reverse (8653153421), we get a palindrome (9896666989).

The spelling of 1243513568 in words is "one billion, two hundred forty-three million, five hundred thirteen thousand, five hundred sixty-eight".