1566641832 has 32 divisors (see below), whose sum is σ = 4476120000. Its totient is φ = 447611904.

The previous prime is 1566641807. The next prime is 1566641837. The reversal of 1566641832 is 2381466651.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1566641837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4662457 + ... + 4662792.

It is an arithmetic number, because the mean of its divisors is an integer number (139878750).

Almost surely, 2^1566641832 is an apocalyptic number.

1566641832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1566641832 is an abundant number, since it is smaller than the sum of its proper divisors (2909478168).

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

1566641832 is a wasteful number, since it uses less digits than its factorization.

1566641832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9325265 (or 9325261 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 1566641832 is about 39580.8265704495. The cubic root of 1566641832 is about 1161.4216201035.

The spelling of 1566641832 in words is "one billion, five hundred sixty-six million, six hundred forty-one thousand, eight hundred thirty-two".