1485520309 has 36 divisors (see below), whose sum is σ = 1880250336. Its totient is φ = 1173109392.

The previous prime is 1485520259. The next prime is 1485520357. The reversal of 1485520309 is 9030255841.

It is not a de Polignac number, because 1485520309 - 2⁹ = 1485519797 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 (1485520109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2840122 + ... + 2840644.

It is an arithmetic number, because the mean of its divisors is an integer number (52229176).

Almost surely, 2^1485520309 is an apocalyptic number.

It is an amenable number.

1485520309 is a deficient number, since it is larger than the sum of its proper divisors (394730027).

1485520309 is an frugal number, since it uses more digits than its factorization.

1485520309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 1485520309 is about 38542.4481448701. The cubic root of 1485520309 is about 1141.0189691603.

The spelling of 1485520309 in words is "one billion, four hundred eighty-five million, five hundred twenty thousand, three hundred nine".