1669846856 has 32 divisors (see below), whose sum is σ = 3152520000. Its totient is φ = 829196736.

The previous prime is 1669846823. The next prime is 1669846909. The reversal of 1669846856 is 6586489661.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1669846795 and 1669846804.

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, 794495 + ... + 796593.

It is an arithmetic number, because the mean of its divisors is an integer number (98516250).

Almost surely, 2^1669846856 is an apocalyptic number.

It is an amenable number.

1669846856 is a deficient number, since it is larger than the sum of its proper divisors (1482673144).

1669846856 is a wasteful number, since it uses less digits than its factorization.

1669846856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741 (or 2737 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 59.

The square root of 1669846856 is about 40863.7596899747. The cubic root of 1669846856 is about 1186.3847286408.

The spelling of 1669846856 in words is "one billion, six hundred sixty-nine million, eight hundred forty-six thousand, eight hundred fifty-six".