1328646364 has 12 divisors (see below), whose sum is σ = 2447506600. Its totient is φ = 629358768.

The previous prime is 1328646353. The next prime is 1328646367. The reversal of 1328646364 is 4636468231.

It is a self number, because there is not a number n which added to its sum of digits gives 1328646364.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328646367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8741019 + ... + 8741170.

Almost surely, 2^1328646364 is an apocalyptic number.

It is an amenable number.

1328646364 is a deficient number, since it is larger than the sum of its proper divisors (1118860236).

1328646364 is a wasteful number, since it uses less digits than its factorization.

1328646364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17482212 (or 17482210 counting only the distinct ones).

The product of its digits is 497664, while the sum is 43.

The square root of 1328646364 is about 36450.6016959940. The cubic root of 1328646364 is about 1099.3512328670.

The spelling of 1328646364 in words is "one billion, three hundred twenty-eight million, six hundred forty-six thousand, three hundred sixty-four".