1669266432 has 132 divisors (see below), whose sum is σ = 5074185480. Its totient is φ = 527081472.

The previous prime is 1669266421. The next prime is 1669266449. The reversal of 1669266432 is 2346629661.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170338 + ... + 179870.

Almost surely, 2^1669266432 is an apocalyptic number.

1669266432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1669266432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2537092740).

1669266432 is an abundant number, since it is smaller than the sum of its proper divisors (3404919048).

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

1669266432 is a wasteful number, since it uses less digits than its factorization.

1669266432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9578 (or 9557 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 1669266432 is about 40856.6571319779. The cubic root of 1669266432 is about 1186.2472537646.

The spelling of 1669266432 in words is "one billion, six hundred sixty-nine million, two hundred sixty-six thousand, four hundred thirty-two".