1328067866 has 4 divisors (see below), whose sum is σ = 1992101802. Its totient is φ = 664033932.

The previous prime is 1328067841. The next prime is 1328067877. The reversal of 1328067866 is 6687608231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 948948025 + 379119841 = 30805^2 + 19471^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1328067866.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332016965 + ... + 332016968.

Almost surely, 2^1328067866 is an apocalyptic number.

1328067866 is a deficient number, since it is larger than the sum of its proper divisors (664033936).

1328067866 is an equidigital number, since it uses as much as digits as its factorization.

1328067866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664033935.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 1328067866 is about 36442.6654623396. The cubic root of 1328067866 is about 1099.1916557137.

The spelling of 1328067866 in words is "one billion, three hundred twenty-eight million, sixty-seven thousand, eight hundred sixty-six".