1669268856 has 16 divisors (see below), whose sum is σ = 4173172200. Its totient is φ = 556422944.

The previous prime is 1669268833. The next prime is 1669268863. The reversal of 1669268856 is 6588629661.

It is a happy number.

It is a super-2 number, since 2×1669268856² = 5572917027223097472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1669268796 and 1669268805.

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, 34776411 + ... + 34776458.

Almost surely, 2^1669268856 is an apocalyptic number.

It is an amenable number.

1669268856 is an abundant number, since it is smaller than the sum of its proper divisors (2503903344).

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

1669268856 is a wasteful number, since it uses less digits than its factorization.

1669268856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69552878 (or 69552874 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 57.

The square root of 1669268856 is about 40856.6867966555. The cubic root of 1669268856 is about 1186.2478279613.

The spelling of 1669268856 in words is "one billion, six hundred sixty-nine million, two hundred sixty-eight thousand, eight hundred fifty-six".