1316505773 has 12 divisors (see below), whose sum is σ = 1451147040. Its totient is φ = 1193450280.

The previous prime is 1316505761. The next prime is 1316505781. The reversal of 1316505773 is 3775056131.

It is not a de Polignac number, because 1316505773 - 2¹⁴ = 1316489389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316505973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28286 + ... + 58592.

It is an arithmetic number, because the mean of its divisors is an integer number (120928920).

Almost surely, 2^1316505773 is an apocalyptic number.

It is an amenable number.

1316505773 is a deficient number, since it is larger than the sum of its proper divisors (134641267).

1316505773 is a wasteful number, since it uses less digits than its factorization.

1316505773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30688 (or 30677 counting only the distinct ones).

The product of its (nonzero) digits is 66150, while the sum is 38.

The square root of 1316505773 is about 36283.6846668031. The cubic root of 1316505773 is about 1095.9925178086.

The spelling of 1316505773 in words is "one billion, three hundred sixteen million, five hundred five thousand, seven hundred seventy-three".