1566166045 has 8 divisors (see below), whose sum is σ = 1879640280. Its totient is φ = 1252772160.

The previous prime is 1566166039. The next prime is 1566166061. The reversal of 1566166045 is 5406616651.

It can be written as a sum of positive squares in 4 ways, for example, as 91145209 + 1475020836 = 9547^2 + 38406^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1566166045 - 2⁹ = 1566165533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1566165989 and 1566166007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38155 + ... + 67735.

It is an arithmetic number, because the mean of its divisors is an integer number (234955035).

Almost surely, 2^1566166045 is an apocalyptic number.

It is an amenable number.

1566166045 is a deficient number, since it is larger than the sum of its proper divisors (313474235).

1566166045 is a wasteful number, since it uses less digits than its factorization.

1566166045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40175.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 1566166045 is about 39574.8157923698. The cubic root of 1566166045 is about 1161.3040341421.

The spelling of 1566166045 in words is "one billion, five hundred sixty-six million, one hundred sixty-six thousand, forty-five".