1669805950 has 12 divisors (see below), whose sum is σ = 3105839160. Its totient is φ = 667922360.

The previous prime is 1669805947. The next prime is 1669805981. The reversal of 1669805950 is 595089661.

It is a junction number, because it is equal to n+sod(n) for n = 1669805894 and 1669805903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16698010 + ... + 16698109.

It is an arithmetic number, because the mean of its divisors is an integer number (258819930).

Almost surely, 2^1669805950 is an apocalyptic number.

1669805950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1669805950 is a deficient number, since it is larger than the sum of its proper divisors (1436033210).

1669805950 is a wasteful number, since it uses less digits than its factorization.

1669805950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33396131 (or 33396126 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 49.

The square root of 1669805950 is about 40863.2591700662. The cubic root of 1669805950 is about 1186.3750409959.

The spelling of 1669805950 in words is "one billion, six hundred sixty-nine million, eight hundred five thousand, nine hundred fifty".