1669343628 has 48 divisors (see below), whose sum is σ = 4176506880. Its totient is φ = 517081344.

The previous prime is 1669343623. The next prime is 1669343639. The reversal of 1669343628 is 8263439661.

It is not an unprimeable number, because it can be changed into a prime (1669343623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35676 + ... + 67907.

It is an arithmetic number, because the mean of its divisors is an integer number (87010560).

Almost surely, 2^1669343628 is an apocalyptic number.

It is an amenable number.

1669343628 is an abundant number, since it is smaller than the sum of its proper divisors (2507163252).

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

1669343628 is a wasteful number, since it uses less digits than its factorization.

1669343628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103686 (or 103684 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 48.

The square root of 1669343628 is about 40857.6018385808. The cubic root of 1669343628 is about 1186.2655396674.

The spelling of 1669343628 in words is "one billion, six hundred sixty-nine million, three hundred forty-three thousand, six hundred twenty-eight".