1328736493 has 8 divisors (see below), whose sum is σ = 1519114688. Its totient is φ = 1138497984.

The previous prime is 1328736467. The next prime is 1328736503. The reversal of 1328736493 is 3946378231.

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 1328736493 - 2¹³ = 1328728301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328736433) 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, 13671 + ... + 53332.

It is an arithmetic number, because the mean of its divisors is an integer number (189889336).

Almost surely, 2^1328736493 is an apocalyptic number.

It is an amenable number.

1328736493 is a deficient number, since it is larger than the sum of its proper divisors (190378195).

1328736493 is an equidigital number, since it uses as much as digits as its factorization.

1328736493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69843.

The product of its digits is 653184, while the sum is 46.

The square root of 1328736493 is about 36451.8379920684. The cubic root of 1328736493 is about 1099.3760905441.

The spelling of 1328736493 in words is "one billion, three hundred twenty-eight million, seven hundred thirty-six thousand, four hundred ninety-three".