1328899967 has 4 divisors (see below), whose sum is σ = 1337364456. Its totient is φ = 1320435480.

The previous prime is 1328899963. The next prime is 1328900051. The reversal of 1328899967 is 7699988231.

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

It is a cyclic number.

It is not a de Polignac number, because 1328899967 - 2² = 1328899963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328899963) 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, 4232009 + ... + 4232322.

It is an arithmetic number, because the mean of its divisors is an integer number (334341114).

Almost surely, 2^1328899967 is an apocalyptic number.

1328899967 is a deficient number, since it is larger than the sum of its proper divisors (8464489).

1328899967 is an equidigital number, since it uses as much as digits as its factorization.

1328899967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8464488.

The product of its digits is 11757312, while the sum is 62.

The square root of 1328899967 is about 36454.0802517359. The cubic root of 1328899967 is about 1099.4211739844.

The spelling of 1328899967 in words is "one billion, three hundred twenty-eight million, eight hundred ninety-nine thousand, nine hundred sixty-seven".