1320696994 has 4 divisors (see below), whose sum is σ = 1981045494. Its totient is φ = 660348496.

The previous prime is 1320696989. The next prime is 1320697009. The reversal of 1320696994 is 4996960231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 754875625 + 565821369 = 27475^2 + 23787^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330174247 + ... + 330174250.

Almost surely, 2^1320696994 is an apocalyptic number.

1320696994 is a deficient number, since it is larger than the sum of its proper divisors (660348500).

1320696994 is an equidigital number, since it uses as much as digits as its factorization.

1320696994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660348499.

The product of its (nonzero) digits is 629856, while the sum is 49.

The square root of 1320696994 is about 36341.3950475212. The cubic root of 1320696994 is about 1097.1543511227.

The spelling of 1320696994 in words is "one billion, three hundred twenty million, six hundred ninety-six thousand, nine hundred ninety-four".