1328885642 has 16 divisors (see below), whose sum is σ = 2321073792. Its totient is φ = 558776400.

The previous prime is 1328885609. The next prime is 1328885681. The reversal of 1328885642 is 2465888231.

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, 894734 + ... + 896217.

It is an arithmetic number, because the mean of its divisors is an integer number (145067112).

Almost surely, 2^1328885642 is an apocalyptic number.

1328885642 is a deficient number, since it is larger than the sum of its proper divisors (992188150).

1328885642 is a wasteful number, since it uses less digits than its factorization.

1328885642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791013.

The product of its digits is 737280, while the sum is 47.

The square root of 1328885642 is about 36453.8837711430. The cubic root of 1328885642 is about 1099.4172235328.

The spelling of 1328885642 in words is "one billion, three hundred twenty-eight million, eight hundred eighty-five thousand, six hundred forty-two".