1328546857 has 8 divisors (see below), whose sum is σ = 1451293920. Its totient is φ = 1206128160.

The previous prime is 1328546803. The next prime is 1328546897. The reversal of 1328546857 is 7586458231.

It is a happy number.

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 1328546857 - 2²³ = 1320158249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1328546857.

It is not an unprimeable number, because it can be changed into a prime (1328546897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73588 + ... + 89845.

It is an arithmetic number, because the mean of its divisors is an integer number (181411740).

Almost surely, 2^1328546857 is an apocalyptic number.

It is an amenable number.

1328546857 is a deficient number, since it is larger than the sum of its proper divisors (122747063).

1328546857 is a wasteful number, since it uses less digits than its factorization.

1328546857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164183.

The product of its digits is 1612800, while the sum is 49.

The square root of 1328546857 is about 36449.2367135445. The cubic root of 1328546857 is about 1099.3237874214.

The spelling of 1328546857 in words is "one billion, three hundred twenty-eight million, five hundred forty-six thousand, eight hundred fifty-seven".