1328378602 has 4 divisors (see below), whose sum is σ = 1992567906. Its totient is φ = 664189300.

The previous prime is 1328378587. The next prime is 1328378609. The reversal of 1328378602 is 2068738231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 881436721 + 446941881 = 29689^2 + 21141^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1328378609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332094649 + ... + 332094652.

Almost surely, 2^1328378602 is an apocalyptic number.

1328378602 is a deficient number, since it is larger than the sum of its proper divisors (664189304).

1328378602 is an equidigital number, since it uses as much as digits as its factorization.

1328378602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664189303.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 1328378602 is about 36446.9285674390. The cubic root of 1328378602 is about 1099.2773771821.

The spelling of 1328378602 in words is "one billion, three hundred twenty-eight million, three hundred seventy-eight thousand, six hundred two".