1328867349 has 4 divisors (see below), whose sum is σ = 1771823136. Its totient is φ = 885911564.

The previous prime is 1328867341. The next prime is 1328867369. The reversal of 1328867349 is 9437688231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1328867349 - 2³ = 1328867341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328867341) 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, 221477889 + ... + 221477894.

It is an arithmetic number, because the mean of its divisors is an integer number (442955784).

Almost surely, 2^1328867349 is an apocalyptic number.

It is an amenable number.

1328867349 is a deficient number, since it is larger than the sum of its proper divisors (442955787).

1328867349 is an equidigital number, since it uses as much as digits as its factorization.

1328867349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442955786.

The product of its digits is 1741824, while the sum is 51.

The square root of 1328867349 is about 36453.6328642290. The cubic root of 1328867349 is about 1099.4121787718.

The spelling of 1328867349 in words is "one billion, three hundred twenty-eight million, eight hundred sixty-seven thousand, three hundred forty-nine".