1323197568 has 288 divisors, whose sum is σ = 4834224720. Its totient is φ = 343526400.

The previous prime is 1323197549. The next prime is 1323197597. The reversal of 1323197568 is 8657913231.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×1323197568² = 3501703607922229248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 619863 + ... + 621993.

Almost surely, 2^1323197568 is an apocalyptic number.

1323197568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323197568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2417112360).

1323197568 is an abundant number, since it is smaller than the sum of its proper divisors (3511027152).

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

1323197568 is a wasteful number, since it uses less digits than its factorization.

1323197568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176 (or 2154 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 1323197568 is about 36375.7827132283. The cubic root of 1323197568 is about 1097.8463559189.

It can be divided in two parts, 1323 and 197568, that added together give a palindrome (198891).

The spelling of 1323197568 in words is "one billion, three hundred twenty-three million, one hundred ninety-seven thousand, five hundred sixty-eight".