1330545505 has 4 divisors (see below), whose sum is σ = 1596654612. Its totient is φ = 1064436400.

The previous prime is 1330545487. The next prime is 1330545539. The reversal of 1330545505 is 5055450331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 577537024 + 753008481 = 24032^2 + 27441^2 .

It is not a de Polignac number, because 1330545505 - 2²³ = 1322156897 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133054546 + ... + 133054555.

It is an arithmetic number, because the mean of its divisors is an integer number (399163653).

Almost surely, 2^1330545505 is an apocalyptic number.

It is an amenable number.

1330545505 is a deficient number, since it is larger than the sum of its proper divisors (266109107).

1330545505 is an equidigital number, since it uses as much as digits as its factorization.

1330545505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266109106.

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 1330545505 is about 36476.6432803239. The cubic root of 1330545505 is about 1099.8747805119.

Adding to 1330545505 its reverse (5055450331), we get a palindrome (6385995836).

The spelling of 1330545505 in words is "one billion, three hundred thirty million, five hundred forty-five thousand, five hundred five".