2015709713 has 4 divisors (see below), whose sum is σ = 2025941940. Its totient is φ = 2005477488.

The previous prime is 2015709701. The next prime is 2015709739. The reversal of 2015709713 is 3179075102.

It is a happy number.

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 1800559489 + 215150224 = 42433^2 + 14668^2 .

It is a cyclic number.

It is not a de Polignac number, because 2015709713 - 2⁸ = 2015709457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2015709793) 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, 5115818 + ... + 5116211.

It is an arithmetic number, because the mean of its divisors is an integer number (506485485).

Almost surely, 2^2015709713 is an apocalyptic number.

It is an amenable number.

2015709713 is a deficient number, since it is larger than the sum of its proper divisors (10232227).

2015709713 is a wasteful number, since it uses less digits than its factorization.

2015709713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10232226.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 2015709713 is about 44896.6559222399. The cubic root of 2015709713 is about 1263.2112831195.

The spelling of 2015709713 in words is "two billion, fifteen million, seven hundred nine thousand, seven hundred thirteen".