1566166042 has 16 divisors (see below), whose sum is σ = 2685969792. Its totient is φ = 670935600.

The previous prime is 1566166039. The next prime is 1566166061. The reversal of 1566166042 is 2406616651.

It is a super-2 number, since 2×1566166042² = 4905752142227891528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1566165992 and 1566166010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13788 + ... + 57640.

It is an arithmetic number, because the mean of its divisors is an integer number (167873112).

Almost surely, 2^1566166042 is an apocalyptic number.

1566166042 is a deficient number, since it is larger than the sum of its proper divisors (1119803750).

1566166042 is a wasteful number, since it uses less digits than its factorization.

1566166042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46413.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 1566166042 is about 39574.8157544669. The cubic root of 1566166042 is about 1161.3040334006.

The spelling of 1566166042 in words is "one billion, five hundred sixty-six million, one hundred sixty-six thousand, forty-two".