1683425856 has 112 divisors (see below), whose sum is σ = 5186623104. Its totient is φ = 471883776.

The previous prime is 1683425851. The next prime is 1683425869. The reversal of 1683425856 is 6585243861.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×1683425856² = 5667845225298665472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1683425851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59416 + ... + 83048.

Almost surely, 2^1683425856 is an apocalyptic number.

1683425856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1683425856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2593311552).

1683425856 is an abundant number, since it is smaller than the sum of its proper divisors (3503197248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1683425856 is a wasteful number, since it uses less digits than its factorization.

1683425856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23708 (or 23698 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 48.

The square root of 1683425856 is about 41029.5729444019. The cubic root of 1683425856 is about 1189.5918982876.

The spelling of 1683425856 in words is "one billion, six hundred eighty-three million, four hundred twenty-five thousand, eight hundred fifty-six".