1682138338 has 16 divisors (see below), whose sum is σ = 2678000184. Its totient is φ = 789707520.

The previous prime is 1682138323. The next prime is 1682138357. The reversal of 1682138338 is 8338312861.

It can be written as a sum of positive squares in 4 ways, for example, as 825815169 + 856323169 = 28737^2 + 29263^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1682138294 and 1682138303.

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 7 ways as a sum of consecutive naturals, for example, 44445 + ... + 73072.

Almost surely, 2^1682138338 is an apocalyptic number.

1682138338 is a deficient number, since it is larger than the sum of its proper divisors (995861846).

1682138338 is a wasteful number, since it uses less digits than its factorization.

1682138338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117957.

The product of its digits is 165888, while the sum is 43.

The square root of 1682138338 is about 41013.8798213483. The cubic root of 1682138338 is about 1189.2885463235.

It can be divided in two parts, 1682 and 138338, that multiplied together give a square (232684516 = 15254²).

The spelling of 1682138338 in words is "one billion, six hundred eighty-two million, one hundred thirty-eight thousand, three hundred thirty-eight".