1669808850 has 48 divisors (see below), whose sum is σ = 4384728288. Its totient is φ = 419088640.

The previous prime is 1669808837. The next prime is 1669808851. The reversal of 1669808850 is 588089661.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 1669808793 and 1669808802.

It is not an unprimeable number, because it can be changed into a prime (1669808851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324864 + ... + 329963.

It is an arithmetic number, because the mean of its divisors is an integer number (91348506).

Almost surely, 2^1669808850 is an apocalyptic number.

1669808850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1669808850 is an abundant number, since it is smaller than the sum of its proper divisors (2714919438).

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

1669808850 is a wasteful number, since it uses less digits than its factorization.

1669808850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654859 (or 654854 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 51.

The square root of 1669808850 is about 40863.2946542493. The cubic root of 1669808850 is about 1186.3757277994.

The spelling of 1669808850 in words is "one billion, six hundred sixty-nine million, eight hundred eight thousand, eight hundred fifty".