1669798272 has 32 divisors (see below), whose sum is σ = 4435402680. Its totient is φ = 556599296.

The previous prime is 1669798219. The next prime is 1669798289. The reversal of 1669798272 is 2728979661.

It is a tau number, because it is divible by the number of its divisors (32).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2173833 + ... + 2174600.

Almost surely, 2^1669798272 is an apocalyptic number.

1669798272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1669798272 is an abundant number, since it is smaller than the sum of its proper divisors (2765604408).

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

1669798272 is an equidigital number, since it uses as much as digits as its factorization.

1669798272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4348450 (or 4348438 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 57.

The square root of 1669798272 is about 40863.1652224837. The cubic root of 1669798272 is about 1186.3732226207.

The spelling of 1669798272 in words is "one billion, six hundred sixty-nine million, seven hundred ninety-eight thousand, two hundred seventy-two".