1789668616 has 8 divisors (see below), whose sum is σ = 3355628670. Its totient is φ = 894834304.

The previous prime is 1789668613. The next prime is 1789668631. The reversal of 1789668616 is 6168669871.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1726402500 + 63266116 = 41550^2 + 7954^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1789668613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111854281 + ... + 111854296.

Almost surely, 2^1789668616 is an apocalyptic number.

It is an amenable number.

1789668616 is a deficient number, since it is larger than the sum of its proper divisors (1565960054).

1789668616 is a wasteful number, since it uses less digits than its factorization.

1789668616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223708583 (or 223708579 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The square root of 1789668616 is about 42304.4751297070. The cubic root of 1789668616 is about 1214.1086149945.

The spelling of 1789668616 in words is "one billion, seven hundred eighty-nine million, six hundred sixty-eight thousand, six hundred sixteen".