1680629863 has 6 divisors (see below), whose sum is σ = 1847304032. Its totient is φ = 1527845220.

The previous prime is 1680629851. The next prime is 1680629969. The reversal of 1680629863 is 3689260861.

It is a happy number.

It is not a de Polignac number, because 1680629863 - 2⁵ = 1680629831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680629063) by changing a digit.

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, 6944631 + ... + 6944872.

Almost surely, 2^1680629863 is an apocalyptic number.

1680629863 is a deficient number, since it is larger than the sum of its proper divisors (166674169).

1680629863 is a wasteful number, since it uses less digits than its factorization.

1680629863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13889525 (or 13889514 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 1680629863 is about 40995.4858856436. The cubic root of 1680629863 is about 1188.9329377245.

The spelling of 1680629863 in words is "one billion, six hundred eighty million, six hundred twenty-nine thousand, eight hundred sixty-three".