1331184160 has 96 divisors (see below), whose sum is σ = 3192845040. Its totient is φ = 524439552.

The previous prime is 1331184143. The next prime is 1331184203. The reversal of 1331184160 is 614811331.

It can be written as a sum of positive squares in 8 ways, for example, as 508412304 + 822771856 = 22548^2 + 28684^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4948506 + ... + 4948774.

Almost surely, 2^1331184160 is an apocalyptic number.

1331184160 is a gapful number since it is divisible by the number (10) 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 1331184160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596422520).

1331184160 is an abundant number, since it is smaller than the sum of its proper divisors (1861660880).

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

1331184160 is a wasteful number, since it uses less digits than its factorization.

1331184160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1331184160 is about 36485.3965306669. The cubic root of 1331184160 is about 1100.0507304427.

Adding to 1331184160 its reverse (614811331), we get a palindrome (1945995491).

The spelling of 1331184160 in words is "one billion, three hundred thirty-one million, one hundred eighty-four thousand, one hundred sixty".