1328574617 has 4 divisors (see below), whose sum is σ = 1328657076. Its totient is φ = 1328492160.

The previous prime is 1328574613. The next prime is 1328574623. The reversal of 1328574617 is 7164758231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7164758231 = 4799 ⋅1492969.

It can be written as a sum of positive squares in 2 ways, for example, as 1159470601 + 169104016 = 34051^2 + 13004^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328574617 - 2² = 1328574613 is a prime.

It is a super-2 number, since 2×1328574617² = 3530221025873393378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1328574613) 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, 8288 + ... + 52209.

It is an arithmetic number, because the mean of its divisors is an integer number (332164269).

Almost surely, 2^1328574617 is an apocalyptic number.

It is an amenable number.

1328574617 is a deficient number, since it is larger than the sum of its proper divisors (82459).

1328574617 is an equidigital number, since it uses as much as digits as its factorization.

1328574617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82458.

The product of its digits is 282240, while the sum is 44.

The square root of 1328574617 is about 36449.6175151400. The cubic root of 1328574617 is about 1099.3314441620.

The spelling of 1328574617 in words is "one billion, three hundred twenty-eight million, five hundred seventy-four thousand, six hundred seventeen".