1328351461 has 4 divisors (see below), whose sum is σ = 1329726112. Its totient is φ = 1326976812.

The previous prime is 1328351443. The next prime is 1328351477. The reversal of 1328351461 is 1641538231.

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 1328351461 - 2¹⁹ = 1327827173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328351441) 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, 685875 + ... + 687808.

It is an arithmetic number, because the mean of its divisors is an integer number (332431528).

Almost surely, 2^1328351461 is an apocalyptic number.

It is an amenable number.

1328351461 is a deficient number, since it is larger than the sum of its proper divisors (1374651).

1328351461 is an equidigital number, since it uses as much as digits as its factorization.

1328351461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374650.

The product of its digits is 17280, while the sum is 34.

The square root of 1328351461 is about 36446.5562296357. The cubic root of 1328351461 is about 1099.2698904384.

Adding to 1328351461 its reverse (1641538231), we get a palindrome (2969889692).

The spelling of 1328351461 in words is "one billion, three hundred twenty-eight million, three hundred fifty-one thousand, four hundred sixty-one".