1316165642 has 48 divisors (see below), whose sum is σ = 2237767560. Its totient is φ = 579870720.

The previous prime is 1316165567. The next prime is 1316165647. The reversal of 1316165642 is 2465616131.

It can be written as a sum of positive squares in 4 ways, for example, as 1209022441 + 107143201 = 34771^2 + 10351^2 .

It is not an unprimeable number, because it can be changed into a prime (1316165647) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1140938 + ... + 1142090.

Almost surely, 2^1316165642 is an apocalyptic number.

1316165642 is a deficient number, since it is larger than the sum of its proper divisors (921601918).

1316165642 is a wasteful number, since it uses less digits than its factorization.

1316165642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319 (or 1308 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 1316165642 is about 36278.9972573664. The cubic root of 1316165642 is about 1095.8981232005.

The spelling of 1316165642 in words is "one billion, three hundred sixteen million, one hundred sixty-five thousand, six hundred forty-two".