1669325328 has 80 divisors (see below), whose sum is σ = 5227195200. Its totient is φ = 505854720.

The previous prime is 1669325327. The next prime is 1669325341. The reversal of 1669325328 is 8235239661.

It is not an unprimeable number, because it can be changed into a prime (1669325321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170893 + ... + 180396.

It is an arithmetic number, because the mean of its divisors is an integer number (65339940).

Almost surely, 2^1669325328 is an apocalyptic number.

1669325328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1669325328 is an abundant number, since it is smaller than the sum of its proper divisors (3557869872).

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

1669325328 is a wasteful number, since it uses less digits than its factorization.

1669325328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351317 (or 351305 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 1669325328 is about 40857.3778894339. The cubic root of 1669325328 is about 1186.2612048821.

The spelling of 1669325328 in words is "one billion, six hundred sixty-nine million, three hundred twenty-five thousand, three hundred twenty-eight".