1316057661 has 12 divisors (see below), whose sum is σ = 1901708640. Its totient is φ = 877031880.

The previous prime is 1316057627. The next prime is 1316057683. The reversal of 1316057661 is 1667506131.

1316057661 is a `hidden beast` number, since 13 + 16 + 0 + 576 + 61 = 666.

It is not a de Polignac number, because 1316057661 - 2⁶ = 1316057597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316057161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2571 + ... + 51368.

It is an arithmetic number, because the mean of its divisors is an integer number (158475720).

Almost surely, 2^1316057661 is an apocalyptic number.

It is an amenable number.

1316057661 is a deficient number, since it is larger than the sum of its proper divisors (585650979).

1316057661 is a wasteful number, since it uses less digits than its factorization.

1316057661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56656 (or 56653 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 1316057661 is about 36277.5090241874. The cubic root of 1316057661 is about 1095.8681524512.

The spelling of 1316057661 in words is "one billion, three hundred sixteen million, fifty-seven thousand, six hundred sixty-one".