1539012313 has 4 divisors (see below), whose sum is σ = 1540257700. Its totient is φ = 1537766928.

The previous prime is 1539012287. The next prime is 1539012337. The reversal of 1539012313 is 3132109351.

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 420578064 + 1118434249 = 20508^2 + 33443^2 .

It is a cyclic number.

It is not a de Polignac number, because 1539012313 - 2¹⁷ = 1538881241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1539012383) 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, 620838 + ... + 623311.

It is an arithmetic number, because the mean of its divisors is an integer number (385064425).

Almost surely, 2^1539012313 is an apocalyptic number.

It is an amenable number.

1539012313 is a deficient number, since it is larger than the sum of its proper divisors (1245387).

1539012313 is a wasteful number, since it uses less digits than its factorization.

1539012313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245386.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 1539012313 is about 39230.2474246595. The cubic root of 1539012313 is about 1154.5534184258.

The spelling of 1539012313 in words is "one billion, five hundred thirty-nine million, twelve thousand, three hundred thirteen".