1966317793 has 8 divisors (see below), whose sum is σ = 2166313536. Its totient is φ = 1769862000.

The previous prime is 1966317779. The next prime is 1966317833. The reversal of 1966317793 is 3977136691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1966317793 - 2¹⁷ = 1966186721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1966317793.

It is not an unprimeable number, because it can be changed into a prime (1966317713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 883821 + ... + 886042.

It is an arithmetic number, because the mean of its divisors is an integer number (270789192).

Almost surely, 2^1966317793 is an apocalyptic number.

It is an amenable number.

1966317793 is a deficient number, since it is larger than the sum of its proper divisors (199995743).

1966317793 is a wasteful number, since it uses less digits than its factorization.

1966317793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769975.

The product of its digits is 1285956, while the sum is 52.

The square root of 1966317793 is about 44343.1820351224. The cubic root of 1966317793 is about 1252.8081492209.

The spelling of 1966317793 in words is "one billion, nine hundred sixty-six million, three hundred seventeen thousand, seven hundred ninety-three".