1320873669 has 16 divisors (see below), whose sum is σ = 1963925440. Its totient is φ = 877398480.

The previous prime is 1320873629. The next prime is 1320873677. The reversal of 1320873669 is 9663780231.

It is not a de Polignac number, because 1320873669 - 2¹² = 1320869573 is a prime.

It is a super-2 number, since 2×1320873669² = 3489414498915043122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320873629) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 80827 + ... + 95784.

It is an arithmetic number, because the mean of its divisors is an integer number (122745340).

Almost surely, 2^1320873669 is an apocalyptic number.

It is an amenable number.

1320873669 is a deficient number, since it is larger than the sum of its proper divisors (643051771).

1320873669 is a wasteful number, since it uses less digits than its factorization.

1320873669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176897 (or 176891 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 1320873669 is about 36343.8257342289. The cubic root of 1320873669 is about 1097.2032725389.

The spelling of 1320873669 in words is "one billion, three hundred twenty million, eight hundred seventy-three thousand, six hundred sixty-nine".