1331027968 has 56 divisors (see below), whose sum is σ = 2719315872. Its totient is φ = 651165696.

The previous prime is 1331027953. The next prime is 1331027981. The reversal of 1331027968 is 8697201331.

It is a self number, because there is not a number n which added to its sum of digits gives 1331027968.

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, 383296 + ... + 386752.

It is an arithmetic number, because the mean of its divisors is an integer number (48559212).

Almost surely, 2^1331027968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331027968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359657936).

1331027968 is an abundant number, since it is smaller than the sum of its proper divisors (1388287904).

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

1331027968 is an frugal number, since it uses more digits than its factorization.

1331027968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530 (or 3506 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 1331027968 is about 36483.2559950452. The cubic root of 1331027968 is about 1100.0077046292.

The spelling of 1331027968 in words is "one billion, three hundred thirty-one million, twenty-seven thousand, nine hundred sixty-eight".