1685769968 has 20 divisors (see below), whose sum is σ = 3267707520. Its totient is φ = 842490624.

The previous prime is 1685769949. The next prime is 1685769991. The reversal of 1685769968 is 8699675861.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12296 + ... + 59352.

It is an arithmetic number, because the mean of its divisors is an integer number (163385376).

Almost surely, 2^1685769968 is an apocalyptic number.

It is an amenable number.

1685769968 is a deficient number, since it is larger than the sum of its proper divisors (1581937552).

1685769968 is a wasteful number, since it uses less digits than its factorization.

1685769968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49304 (or 49298 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 65.

The square root of 1685769968 is about 41058.1291341922. The cubic root of 1685769968 is about 1190.1437973255.

The spelling of 1685769968 in words is "one billion, six hundred eighty-five million, seven hundred sixty-nine thousand, nine hundred sixty-eight".