1683656428 has 24 divisors (see below), whose sum is σ = 2961841680. Its totient is φ = 837427200.

The previous prime is 1683656417. The next prime is 1683656479. The reversal of 1683656428 is 8246563861.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050828 + ... + 1052428.

It is an arithmetic number, because the mean of its divisors is an integer number (123410070).

Almost surely, 2^1683656428 is an apocalyptic number.

It is an amenable number.

1683656428 is a deficient number, since it is larger than the sum of its proper divisors (1278185252).

1683656428 is a wasteful number, since it uses less digits than its factorization.

1683656428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817 (or 2815 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

The square root of 1683656428 is about 41032.3826751506. The cubic root of 1683656428 is about 1189.6462069979.

The spelling of 1683656428 in words is "one billion, six hundred eighty-three million, six hundred fifty-six thousand, four hundred twenty-eight".