1669236672 has 28 divisors (see below), whose sum is σ = 4416522536. Its totient is φ = 556412160.

The previous prime is 1669236629. The next prime is 1669236677. The reversal of 1669236672 is 2766329661.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669236677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4346779 + ... + 4347162.

Almost surely, 2^1669236672 is an apocalyptic number.

1669236672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1669236672 is an abundant number, since it is smaller than the sum of its proper divisors (2747285864).

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

1669236672 is an equidigital number, since it uses as much as digits as its factorization.

1669236672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8693956 (or 8693946 counting only the distinct ones).

The product of its digits is 979776, while the sum is 48.

The square root of 1669236672 is about 40856.2929302207. The cubic root of 1669236672 is about 1186.2402041753.

The spelling of 1669236672 in words is "one billion, six hundred sixty-nine million, two hundred thirty-six thousand, six hundred seventy-two".