1639795682 has 12 divisors (see below), whose sum is σ = 2861276310. Its totient is φ = 702769536.

The previous prime is 1639795613. The next prime is 1639795687. The reversal of 1639795682 is 2865979361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1612745281 + 27050401 = 40159^2 + 5201^2 .

It is not an unprimeable number, because it can be changed into a prime (1639795687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8366207 + ... + 8366402.

Almost surely, 2^1639795682 is an apocalyptic number.

1639795682 is a deficient number, since it is larger than the sum of its proper divisors (1221480628).

1639795682 is a wasteful number, since it uses less digits than its factorization.

1639795682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16732625 (or 16732618 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 56.

The square root of 1639795682 is about 40494.3907473615. The cubic root of 1639795682 is about 1179.2247330241.

The spelling of 1639795682 in words is "one billion, six hundred thirty-nine million, seven hundred ninety-five thousand, six hundred eighty-two".