1213436568 has 16 divisors (see below), whose sum is σ = 3033591480. Its totient is φ = 404478848.

The previous prime is 1213436509. The next prime is 1213436593. The reversal of 1213436568 is 8656343121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25279905 + ... + 25279952.

Almost surely, 2^1213436568 is an apocalyptic number.

It is an amenable number.

1213436568 is an abundant number, since it is smaller than the sum of its proper divisors (1820154912).

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

1213436568 is a wasteful number, since it uses less digits than its factorization.

1213436568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50559866 (or 50559862 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 1213436568 is about 34834.4164297322. The cubic root of 1213436568 is about 1066.6101026429.

Adding to 1213436568 its reverse (8656343121), we get a palindrome (9869779689).

The spelling of 1213436568 in words is "one billion, two hundred thirteen million, four hundred thirty-six thousand, five hundred sixty-eight".