1316005556 has 12 divisors (see below), whose sum is σ = 2303908068. Its totient is φ = 657746112.

The previous prime is 1316005553. The next prime is 1316005573. The reversal of 1316005556 is 6555006131.

It can be written as a sum of positive squares in 2 ways, for example, as 1096669456 + 219336100 = 33116^2 + 14810^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316005553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52391 + ... + 73326.

It is an arithmetic number, because the mean of its divisors is an integer number (191992339).

Almost surely, 2^1316005556 is an apocalyptic number.

It is an amenable number.

1316005556 is a deficient number, since it is larger than the sum of its proper divisors (987902512).

1316005556 is a wasteful number, since it uses less digits than its factorization.

1316005556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128338 (or 128336 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 1316005556 is about 36276.7908724022. The cubic root of 1316005556 is about 1095.8536898215.

The spelling of 1316005556 in words is "one billion, three hundred sixteen million, five thousand, five hundred fifty-six".