1686332164 has 24 divisors (see below), whose sum is σ = 3280108608. Its totient is φ = 752051040.

The previous prime is 1686332071. The next prime is 1686332191. The reversal of 1686332164 is 4612336861.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359232 + ... + 363895.

It is an arithmetic number, because the mean of its divisors is an integer number (136671192).

Almost surely, 2^1686332164 is an apocalyptic number.

It is an amenable number.

1686332164 is a deficient number, since it is larger than the sum of its proper divisors (1593776444).

1686332164 is a wasteful number, since it uses less digits than its factorization.

1686332164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723195 (or 723193 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 1686332164 is about 41064.9749056297. The cubic root of 1686332164 is about 1190.2760849900.

The spelling of 1686332164 in words is "one billion, six hundred eighty-six million, three hundred thirty-two thousand, one hundred sixty-four".