1338965568 has 84 divisors (see below), whose sum is σ = 4039930960. Its totient is φ = 422827776.

The previous prime is 1338965557. The next prime is 1338965569. The reversal of 1338965568 is 8655698331.

1338965568 is a `hidden beast` number, since 1 + 3 + 3 + 89 + 6 + 556 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (1338965569) 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, 50230 + ... + 72117.

Almost surely, 2^1338965568 is an apocalyptic number.

1338965568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1338965568 is an abundant number, since it is smaller than the sum of its proper divisors (2700965392).

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

1338965568 is a wasteful number, since it uses less digits than its factorization.

1338965568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122384 (or 122371 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 1338965568 is about 36591.8784431737. The cubic root of 1338965568 is about 1102.1900083322.

The spelling of 1338965568 in words is "one billion, three hundred thirty-eight million, nine hundred sixty-five thousand, five hundred sixty-eight".