1682639439 has 16 divisors (see below), whose sum is σ = 2418455424. Its totient is φ = 1034460000.

The previous prime is 1682639423. The next prime is 1682639443. The reversal of 1682639439 is 9349362861.

It is not a de Polignac number, because 1682639439 - 2⁴ = 1682639423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1682639391 and 1682639400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1682639419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20464 + ... + 61514.

It is an arithmetic number, because the mean of its divisors is an integer number (151153464).

Almost surely, 2^1682639439 is an apocalyptic number.

1682639439 is a deficient number, since it is larger than the sum of its proper divisors (735815985).

1682639439 is a wasteful number, since it uses less digits than its factorization.

1682639439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42118.

The product of its digits is 1679616, while the sum is 51.

The square root of 1682639439 is about 41019.9882862002. The cubic root of 1682639439 is about 1189.4066290636.

It can be divided in two parts, 16826 and 39439, that added together give a palindrome (56265).

The spelling of 1682639439 in words is "one billion, six hundred eighty-two million, six hundred thirty-nine thousand, four hundred thirty-nine".