1491330056 has 16 divisors (see below), whose sum is σ = 2829934800. Its totient is φ = 736680784.

The previous prime is 1491330047. The next prime is 1491330091. The reversal of 1491330056 is 6500331941.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122326 + ... + 1123653.

It is an arithmetic number, because the mean of its divisors is an integer number (176870925).

Almost surely, 2^1491330056 is an apocalyptic number.

It is an amenable number.

1491330056 is a deficient number, since it is larger than the sum of its proper divisors (1338604744).

1491330056 is a wasteful number, since it uses less digits than its factorization.

1491330056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246068 (or 2246064 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 1491330056 is about 38617.7427615856. The cubic root of 1491330056 is about 1142.5045111521.

Adding to 1491330056 its reverse (6500331941), we get a palindrome (7991661997).

The spelling of 1491330056 in words is "one billion, four hundred ninety-one million, three hundred thirty thousand, fifty-six".