1688506852 has 12 divisors (see below), whose sum is σ = 2955264256. Its totient is φ = 844145640.

The previous prime is 1688506849. The next prime is 1688506871. The reversal of 1688506852 is 2586058861.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1688506796 and 1688506805.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 15853 + ... + 60235.

Almost surely, 2^1688506852 is an apocalyptic number.

It is an amenable number.

1688506852 is a deficient number, since it is larger than the sum of its proper divisors (1266757404).

1688506852 is a wasteful number, since it uses less digits than its factorization.

1688506852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53898 (or 53896 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 49.

The square root of 1688506852 is about 41091.4449977121. Note that the first 3 decimals coincide. The cubic root of 1688506852 is about 1190.7875238142.

The spelling of 1688506852 in words is "one billion, six hundred eighty-eight million, five hundred six thousand, eight hundred fifty-two".