1566166000 has 80 divisors (see below), whose sum is σ = 4328026560. Its totient is φ = 536966400.

The previous prime is 1566165983. The next prime is 1566166001. The reversal of 1566166000 is 6616651.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566166001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41935 + ... + 69934.

It is an arithmetic number, because the mean of its divisors is an integer number (54100332).

Almost surely, 2^1566166000 is an apocalyptic number.

1566166000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1566166000 is an abundant number, since it is smaller than the sum of its proper divisors (2761860560).

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

1566166000 is a wasteful number, since it uses less digits than its factorization.

1566166000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111899 (or 111883 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1566166000 is about 39574.8152238264. The cubic root of 1566166000 is about 1161.3040230197.

The spelling of 1566166000 in words is "one billion, five hundred sixty-six million, one hundred sixty-six thousand".