8539742015 has 16 divisors (see below), whose sum is σ = 11718008832. Its totient is φ = 5852641824.

The previous prime is 8539741913. The next prime is 8539742023. The reversal of 8539742015 is 5102479358.

It is a cyclic number.

It is not a de Polignac number, because 8539742015 - 2²⁰ = 8538693439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2 + ... + 130688.

It is an arithmetic number, because the mean of its divisors is an integer number (732375552).

Almost surely, 2^8539742015 is an apocalyptic number.

8539742015 is a deficient number, since it is larger than the sum of its proper divisors (3178266817).

8539742015 is a wasteful number, since it uses less digits than its factorization.

8539742015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132566.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 8539742015 is about 92410.7245670112. The cubic root of 8539742015 is about 2044.0032576640.

The spelling of 8539742015 in words is "eight billion, five hundred thirty-nine million, seven hundred forty-two thousand, fifteen".