1682640650 has 12 divisors (see below), whose sum is σ = 3129711702. Its totient is φ = 673056240.

The previous prime is 1682640649. The next prime is 1682640677. The reversal of 1682640650 is 560462861.

It can be written as a sum of positive squares in 3 ways, for example, as 766791481 + 915849169 = 27691^2 + 30263^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

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 5 ways as a sum of consecutive naturals, for example, 16826357 + ... + 16826456.

Almost surely, 2^1682640650 is an apocalyptic number.

1682640650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1682640650 is a deficient number, since it is larger than the sum of its proper divisors (1447071052).

1682640650 is a wasteful number, since it uses less digits than its factorization.

1682640650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33652825 (or 33652820 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 1682640650 is about 41020.0030472939. The cubic root of 1682640650 is about 1189.4069144032.

The spelling of 1682640650 in words is "one billion, six hundred eighty-two million, six hundred forty thousand, six hundred fifty".