1685168428 has 12 divisors (see below), whose sum is σ = 2958529392. Its totient is φ = 839874320.

The previous prime is 1685168423. The next prime is 1685168447. The reversal of 1685168428 is 8248615861.

It is not an unprimeable number, because it can be changed into a prime (1685168423) 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 3 ways as a sum of consecutive naturals, for example, 676075 + ... + 678562.

It is an arithmetic number, because the mean of its divisors is an integer number (246544116).

Almost surely, 2^1685168428 is an apocalyptic number.

It is an amenable number.

1685168428 is a deficient number, since it is larger than the sum of its proper divisors (1273360964).

1685168428 is a wasteful number, since it uses less digits than its factorization.

1685168428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354952 (or 1354950 counting only the distinct ones).

The product of its digits is 737280, while the sum is 49.

The square root of 1685168428 is about 41050.8030128523. The cubic root of 1685168428 is about 1190.0022192365.

The spelling of 1685168428 in words is "one billion, six hundred eighty-five million, one hundred sixty-eight thousand, four hundred twenty-eight".