1328258809 has 8 divisors (see below), whose sum is σ = 1386421632. Its totient is φ = 1270130400.

The previous prime is 1328258803. The next prime is 1328258831. The reversal of 1328258809 is 9088528231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1328258809 - 2¹⁵ = 1328226041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1328258803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99109 + ... + 111709.

It is an arithmetic number, because the mean of its divisors is an integer number (173302704).

Almost surely, 2^1328258809 is an apocalyptic number.

It is an amenable number.

1328258809 is a deficient number, since it is larger than the sum of its proper divisors (58162823).

1328258809 is a wasteful number, since it uses less digits than its factorization.

1328258809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17207.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 1328258809 is about 36445.2851408793. The cubic root of 1328258809 is about 1099.2443319611.

The spelling of 1328258809 in words is "one billion, three hundred twenty-eight million, two hundred fifty-eight thousand, eight hundred nine".