1669125850 has 48 divisors (see below), whose sum is σ = 3590895168. Its totient is φ = 565367040.

The previous prime is 1669125803. The next prime is 1669125877. The reversal of 1669125850 is 585219661.

It is a super-2 number, since 2×1669125850² = 5571962206276445000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1669125797 and 1669125806.

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 23 ways as a sum of consecutive naturals, for example, 322 + ... + 57778.

It is an arithmetic number, because the mean of its divisors is an integer number (74810316).

Almost surely, 2^1669125850 is an apocalyptic number.

1669125850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1669125850 is an abundant number, since it is smaller than the sum of its proper divisors (1921769318).

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

1669125850 is a wasteful number, since it uses less digits than its factorization.

1669125850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57559 (or 57554 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 1669125850 is about 40854.9366662096. The cubic root of 1669125850 is about 1186.2139517723.

The spelling of 1669125850 in words is "one billion, six hundred sixty-nine million, one hundred twenty-five thousand, eight hundred fifty".