1296031968 has 576 divisors, whose sum is σ = 5046935040. Its totient is φ = 321995520.

The previous prime is 1296031963. The next prime is 1296031981. The reversal of 1296031968 is 8691306921.

It is a happy number.

1296031968 is a `hidden beast` number, since 1 + 29 + 603 + 19 + 6 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296031963) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 56349205 + ... + 56349227.

It is an arithmetic number, because the mean of its divisors is an integer number (8762040).

Almost surely, 2^1296031968 is an apocalyptic number.

1296031968 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 1296031968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2523467520).

1296031968 is an abundant number, since it is smaller than the sum of its proper divisors (3750903072).

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

1296031968 is a wasteful number, since it uses less digits than its factorization.

1296031968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 1296031968 is about 36000.4439972620. The cubic root of 1296031968 is about 1090.2813200872.

The spelling of 1296031968 in words is "one billion, two hundred ninety-six million, thirty-one thousand, nine hundred sixty-eight".