1930268666 has 8 divisors (see below), whose sum is σ = 2895606804. Its totient is φ = 965066400.

The previous prime is 1930268663. The next prime is 1930268731. The reversal of 1930268666 is 6668620391.

It can be written as a sum of positive squares in 2 ways, for example, as 1929405625 + 863041 = 43925^2 + 929^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1930268666.

It is not an unprimeable number, because it can be changed into a prime (1930268663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16616 + ... + 64316.

Almost surely, 2^1930268666 is an apocalyptic number.

1930268666 is a deficient number, since it is larger than the sum of its proper divisors (965338138).

1930268666 is a wasteful number, since it uses less digits than its factorization.

1930268666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67936.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 1930268666 is about 43934.8229312467. The cubic root of 1930268666 is about 1245.1048370076.

The spelling of 1930268666 in words is "one billion, nine hundred thirty million, two hundred sixty-eight thousand, six hundred sixty-six".