1689050648 has 8 divisors (see below), whose sum is σ = 3166969980. Its totient is φ = 844525320.

The previous prime is 1689050647. The next prime is 1689050651. The reversal of 1689050648 is 8460509861.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689050647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105565658 + ... + 105565673.

Almost surely, 2^1689050648 is an apocalyptic number.

It is an amenable number.

1689050648 is a deficient number, since it is larger than the sum of its proper divisors (1477919332).

1689050648 is a wasteful number, since it uses less digits than its factorization.

1689050648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211131337 (or 211131333 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 1689050648 is about 41098.0613654708. The cubic root of 1689050648 is about 1190.9153440416.

The spelling of 1689050648 in words is "one billion, six hundred eighty-nine million, fifty thousand, six hundred forty-eight".