1683938 has 8 divisors (see below), whose sum is σ = 2539200. Its totient is φ = 837540.

The previous prime is 1683887. The next prime is 1683949. The reversal of 1683938 is 8393861.

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

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 3 ways as a sum of consecutive naturals, for example, 1718 + ... + 2513.

It is an arithmetic number, because the mean of its divisors is an integer number (317400).

2^1683938 is an apocalyptic number.

1683938 is a deficient number, since it is larger than the sum of its proper divisors (855262).

1683938 is a wasteful number, since it uses less digits than its factorization.

1683938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432.

The product of its digits is 31104, while the sum is 38.

The square root of 1683938 is about 1297.6663669834. Note that the first 3 decimals coincide. The cubic root of 1683938 is about 118.9712521476.

The spelling of 1683938 in words is "one million, six hundred eighty-three thousand, nine hundred thirty-eight".