1328565503 has 8 divisors (see below), whose sum is σ = 1338444000. Its totient is φ = 1318700128.

The previous prime is 1328565473. The next prime is 1328565523. The reversal of 1328565503 is 3055658231.

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 1328565503 - 2⁸ = 1328565247 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 (1328565523) 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, 301625 + ... + 305997.

It is an arithmetic number, because the mean of its divisors is an integer number (167305500).

Almost surely, 2^1328565503 is an apocalyptic number.

1328565503 is a deficient number, since it is larger than the sum of its proper divisors (9878497).

1328565503 is a wasteful number, since it uses less digits than its factorization.

1328565503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6561.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 1328565503 is about 36449.4924930375. The cubic root of 1328565503 is about 1099.3289303577.

The spelling of 1328565503 in words is "one billion, three hundred twenty-eight million, five hundred sixty-five thousand, five hundred three".