1331376464 has 40 divisors (see below), whose sum is σ = 2822521728. Its totient is φ = 603348480.

The previous prime is 1331376443. The next prime is 1331376469. The reversal of 1331376464 is 4646731331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331376469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48089 + ... + 70535.

Almost surely, 2^1331376464 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 1331376464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1411260864).

1331376464 is an abundant number, since it is smaller than the sum of its proper divisors (1491145264).

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

1331376464 is a wasteful number, since it uses less digits than its factorization.

1331376464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22803 (or 22797 counting only the distinct ones).

The product of its digits is 108864, while the sum is 38.

The square root of 1331376464 is about 36488.0317912600. The cubic root of 1331376464 is about 1100.1036993146.

The spelling of 1331376464 in words is "one billion, three hundred thirty-one million, three hundred seventy-six thousand, four hundred sixty-four".