1320340539 has 16 divisors (see below), whose sum is σ = 2012917760. Its totient is φ = 754116480.

The previous prime is 1320340531. The next prime is 1320340559. The reversal of 1320340539 is 9350430231.

It is not a de Polignac number, because 1320340539 - 2³ = 1320340531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320340531) 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 15 ways as a sum of consecutive naturals, for example, 32979 + ... + 61059.

It is an arithmetic number, because the mean of its divisors is an integer number (125807360).

Almost surely, 2^1320340539 is an apocalyptic number.

1320340539 is a deficient number, since it is larger than the sum of its proper divisors (692577221).

1320340539 is a wasteful number, since it uses less digits than its factorization.

1320340539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30330.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 1320340539 is about 36336.4904606925. The cubic root of 1320340539 is about 1097.0556352310.

The spelling of 1320340539 in words is "one billion, three hundred twenty million, three hundred forty thousand, five hundred thirty-nine".