1052543666 has 8 divisors (see below), whose sum is σ = 1580892444. Its totient is φ = 525579520.

The previous prime is 1052543647. The next prime is 1052543671. The reversal of 1052543666 is 6663452501.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 797215225 + 255328441 = 28235^2 + 15979^2 .

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

It is a super-2 number, since 2×1052543666² = 2215696337673439112, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 344255 + ... + 347298.

Almost surely, 2^1052543666 is an apocalyptic number.

1052543666 is a deficient number, since it is larger than the sum of its proper divisors (528348778).

1052543666 is an equidigital number, since it uses as much as digits as its factorization.

1052543666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692316.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 1052543666 is about 32442.9293683539. The cubic root of 1052543666 is about 1017.2164482239.

The spelling of 1052543666 in words is "one billion, fifty-two million, five hundred forty-three thousand, six hundred sixty-six".