1566638332 has 48 divisors (see below), whose sum is σ = 3332689920. Its totient is φ = 629044992.

The previous prime is 1566638317. The next prime is 1566638401. The reversal of 1566638332 is 2338366651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98769 + ... + 113527.

It is an arithmetic number, because the mean of its divisors is an integer number (69431040).

Almost surely, 2^1566638332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1566638332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1666344960).

1566638332 is an abundant number, since it is smaller than the sum of its proper divisors (1766051588).

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

1566638332 is a wasteful number, since it uses less digits than its factorization.

1566638332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15010 (or 15008 counting only the distinct ones).

The product of its digits is 466560, while the sum is 43.

The square root of 1566638332 is about 39580.7823570985. The cubic root of 1566638332 is about 1161.4207552007.

The spelling of 1566638332 in words is "one billion, five hundred sixty-six million, six hundred thirty-eight thousand, three hundred thirty-two".