1566166044 has 48 divisors (see below), whose sum is σ = 3769113600. Its totient is φ = 505786176.

The previous prime is 1566166039. The next prime is 1566166061. The reversal of 1566166044 is 4406616651.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1566165993 and 1566166011.

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, 98737 + ... + 113495.

It is an arithmetic number, because the mean of its divisors is an integer number (78523200).

Almost surely, 2^1566166044 is an apocalyptic number.

It is an amenable number.

1566166044 is an abundant number, since it is smaller than the sum of its proper divisors (2202947556).

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

1566166044 is a wasteful number, since it uses less digits than its factorization.

1566166044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15042 (or 15040 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 1566166044 is about 39574.8157797355. The cubic root of 1566166044 is about 1161.3040338950.

The spelling of 1566166044 in words is "one billion, five hundred sixty-six million, one hundred sixty-six thousand, forty-four".