1328252013 has 20 divisors (see below), whose sum is σ = 2164560288. Its totient is φ = 805000680.

The previous prime is 1328251987. The next prime is 1328252083. The reversal of 1328252013 is 3102528231.

1328252013 is a `hidden beast` number, since 132 + 8 + 2 + 520 + 1 + 3 = 666.

1328252013 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1328252013 - 2⁹ = 1328251501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328252083) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 744481 + ... + 746262.

Almost surely, 2^1328252013 is an apocalyptic number.

It is an amenable number.

1328252013 is a deficient number, since it is larger than the sum of its proper divisors (836308275).

1328252013 is a wasteful number, since it uses less digits than its factorization.

1328252013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490766 (or 1490757 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1328252013 is about 36445.1919051059. The cubic root of 1328252013 is about 1099.2424572067.

The spelling of 1328252013 in words is "one billion, three hundred twenty-eight million, two hundred fifty-two thousand, thirteen".