3968380513 has 4 divisors (see below), whose sum is σ = 3993656980. Its totient is φ = 3943104048.

The previous prime is 3968380441. The next prime is 3968380541. The reversal of 3968380513 is 3150838693.

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 999002449 + 2969378064 = 31607^2 + 54492^2 .

It is a cyclic number.

It is not a de Polignac number, because 3968380513 - 2²¹ = 3966283361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3968380543) 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, 12637998 + ... + 12638311.

It is an arithmetic number, because the mean of its divisors is an integer number (998414245).

Almost surely, 2^3968380513 is an apocalyptic number.

It is an amenable number.

3968380513 is a deficient number, since it is larger than the sum of its proper divisors (25276467).

3968380513 is a wasteful number, since it uses less digits than its factorization.

3968380513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25276466.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 3968380513 is about 62995.0832446470. The cubic root of 3968380513 is about 1583.2072480749.

The spelling of 3968380513 in words is "three billion, nine hundred sixty-eight million, three hundred eighty thousand, five hundred thirteen".