3870718309 has 4 divisors (see below), whose sum is σ = 3872051820. Its totient is φ = 3869384800.

The previous prime is 3870718301. The next prime is 3870718337. The reversal of 3870718309 is 9038170783.

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: 9038170783 = 13451 ⋅671933.

It can be written as a sum of positive squares in 2 ways, for example, as 2513016900 + 1357701409 = 50130^2 + 36847^2 .

It is a cyclic number.

It is not a de Polignac number, because 3870718309 - 2³ = 3870718301 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 (3870718301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662392 + ... + 668209.

It is an arithmetic number, because the mean of its divisors is an integer number (968012955).

Almost surely, 2^3870718309 is an apocalyptic number.

It is an amenable number.

3870718309 is a deficient number, since it is larger than the sum of its proper divisors (1333511).

3870718309 is a wasteful number, since it uses less digits than its factorization.

3870718309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333510.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 3870718309 is about 62215.0971147679. The cubic root of 3870718309 is about 1570.1116002458. Note that the first 3 decimals are identical.

The spelling of 3870718309 in words is "three billion, eight hundred seventy million, seven hundred eighteen thousand, three hundred nine".