1686752338 has 8 divisors (see below), whose sum is σ = 2531381580. Its totient is φ = 842958480.

The previous prime is 1686752323. The next prime is 1686752371. The reversal of 1686752338 is 8332576861.

It can be written as a sum of positive squares in 2 ways, for example, as 1684856209 + 1896129 = 41047^2 + 1377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1686752291 and 1686752300.

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, 203773 + ... + 211888.

Almost surely, 2^1686752338 is an apocalyptic number.

1686752338 is a deficient number, since it is larger than the sum of its proper divisors (844629242).

1686752338 is a wasteful number, since it uses less digits than its factorization.

1686752338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417692.

The product of its digits is 1451520, while the sum is 49.

The square root of 1686752338 is about 41070.0905526151. The cubic root of 1686752338 is about 1190.3749349364.

The spelling of 1686752338 in words is "one billion, six hundred eighty-six million, seven hundred fifty-two thousand, three hundred thirty-eight".