1321986794 has 8 divisors (see below), whose sum is σ = 1983178080. Its totient is φ = 660927436.

The previous prime is 1321986773. The next prime is 1321986811. The reversal of 1321986794 is 4976891231.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2174 + ... + 51465.

It is an arithmetic number, because the mean of its divisors is an integer number (247897260).

Almost surely, 2^1321986794 is an apocalyptic number.

1321986794 is a deficient number, since it is larger than the sum of its proper divisors (661191286).

1321986794 is a wasteful number, since it uses less digits than its factorization.

1321986794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65964.

The product of its digits is 653184, while the sum is 50.

The square root of 1321986794 is about 36359.1363208754. The cubic root of 1321986794 is about 1097.5113972557.

The spelling of 1321986794 in words is "one billion, three hundred twenty-one million, nine hundred eighty-six thousand, seven hundred ninety-four".