1686963922 has 16 divisors (see below), whose sum is σ = 2935103040. Its totient is φ = 712193328.

The previous prime is 1686963919. The next prime is 1686963953. The reversal of 1686963922 is 2293696861.

It is a self number, because there is not a number n which added to its sum of digits gives 1686963922.

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, 898297 + ... + 900172.

It is an arithmetic number, because the mean of its divisors is an integer number (183443940).

Almost surely, 2^1686963922 is an apocalyptic number.

1686963922 is a deficient number, since it is larger than the sum of its proper divisors (1248139118).

1686963922 is a wasteful number, since it uses less digits than its factorization.

1686963922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798545.

The product of its digits is 1679616, while the sum is 52.

The square root of 1686963922 is about 41072.6663609754. Note that the first 3 decimals coincide. The cubic root of 1686963922 is about 1190.4247058787.

The spelling of 1686963922 in words is "one billion, six hundred eighty-six million, nine hundred sixty-three thousand, nine hundred twenty-two".