1066659938 has 16 divisors (see below), whose sum is σ = 1637120160. Its totient is φ = 521064576.

The previous prime is 1066659929. The next prime is 1066659941. The reversal of 1066659938 is 8399566601.

It is a super-2 number, since 2×1066659938² = 2275526846668327688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1066659938.

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, 8495 + ... + 46962.

It is an arithmetic number, because the mean of its divisors is an integer number (102320010).

Almost surely, 2^1066659938 is an apocalyptic number.

1066659938 is a deficient number, since it is larger than the sum of its proper divisors (570460222).

1066659938 is a wasteful number, since it uses less digits than its factorization.

1066659938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55681.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 1066659938 is about 32659.7602256967. The cubic root of 1066659938 is about 1021.7437614199.

The spelling of 1066659938 in words is "one billion, sixty-six million, six hundred fifty-nine thousand, nine hundred thirty-eight".