1326343788 has 192 divisors, whose sum is σ = 4308864000. Its totient is φ = 342766080.

The previous prime is 1326343787. The next prime is 1326343793. The reversal of 1326343788 is 8873436231.

1326343788 is a `hidden beast` number, since 1 + 3 + 2 + 634 + 3 + 7 + 8 + 8 = 666.

1326343788 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1326343787) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2902056 + ... + 2902512.

It is an arithmetic number, because the mean of its divisors is an integer number (22442000).

Almost surely, 2^1326343788 is an apocalyptic number.

1326343788 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 1326343788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2154432000).

1326343788 is an abundant number, since it is smaller than the sum of its proper divisors (2982520212).

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

1326343788 is a wasteful number, since it uses less digits than its factorization.

1326343788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 829 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 1326343788 is about 36419.0031165050. The cubic root of 1326343788 is about 1098.7157983040.

The spelling of 1326343788 in words is "one billion, three hundred twenty-six million, three hundred forty-three thousand, seven hundred eighty-eight".