1331132664 has 64 divisors (see below), whose sum is σ = 3360356640. Its totient is φ = 439395840.

The previous prime is 1331132633. The next prime is 1331132681. The reversal of 1331132664 is 4662311331.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2038162 + ... + 2038814.

Almost surely, 2^1331132664 is an apocalyptic number.

It is an amenable number.

1331132664 is an abundant number, since it is smaller than the sum of its proper divisors (2029223976).

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

1331132664 is a wasteful number, since it uses less digits than its factorization.

1331132664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 1356 counting only the distinct ones).

The product of its digits is 7776, while the sum is 30.

The square root of 1331132664 is about 36484.6908168344. The cubic root of 1331132664 is about 1100.0365453423.

Adding to 1331132664 its reverse (4662311331), we get a palindrome (5993443995).

The spelling of 1331132664 in words is "one billion, three hundred thirty-one million, one hundred thirty-two thousand, six hundred sixty-four".