1328306969 has 4 divisors (see below), whose sum is σ = 1449062160. Its totient is φ = 1207551780.

The previous prime is 1328306957. The next prime is 1328306983. The reversal of 1328306969 is 9696038231.

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 1328306969 - 2¹² = 1328302873 is a prime.

It is a super-2 number, since 2×1328306969² = 3528798807787933922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1328306939) 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, 60377579 + ... + 60377600.

It is an arithmetic number, because the mean of its divisors is an integer number (362265540).

Almost surely, 2^1328306969 is an apocalyptic number.

It is an amenable number.

1328306969 is a deficient number, since it is larger than the sum of its proper divisors (120755191).

1328306969 is a wasteful number, since it uses less digits than its factorization.

1328306969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120755190.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 1328306969 is about 36445.9458513564. The cubic root of 1328306969 is about 1099.2576172653.

The spelling of 1328306969 in words is "one billion, three hundred twenty-eight million, three hundred six thousand, nine hundred sixty-nine".