1321484539 has 4 divisors (see below), whose sum is σ = 1323349120. Its totient is φ = 1319619960.

The previous prime is 1321484531. The next prime is 1321484551. The reversal of 1321484539 is 9354841231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9354841231 = 79357 ⋅117883.

It is a cyclic number.

It is not a de Polignac number, because 1321484539 - 2³ = 1321484531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321484531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 931227 + ... + 932644.

It is an arithmetic number, because the mean of its divisors is an integer number (330837280).

Almost surely, 2^1321484539 is an apocalyptic number.

1321484539 is a deficient number, since it is larger than the sum of its proper divisors (1864581).

1321484539 is an equidigital number, since it uses as much as digits as its factorization.

1321484539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864580.

The product of its digits is 103680, while the sum is 40.

The square root of 1321484539 is about 36352.2288037474. The cubic root of 1321484539 is about 1097.3723892080.

The spelling of 1321484539 in words is "one billion, three hundred twenty-one million, four hundred eighty-four thousand, five hundred thirty-nine".