850518539 has 4 divisors (see below), whose sum is σ = 915943056. Its totient is φ = 785094024.

The previous prime is 850518481. The next prime is 850518563. The reversal of 850518539 is 935815058.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 935815058 = 2 ⋅467907529.

It is not a de Polignac number, because 850518539 - 2¹² = 850514443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 850518539.

It is not an unprimeable number, because it can be changed into a prime (850518589) 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, 32712239 + ... + 32712264.

It is an arithmetic number, because the mean of its divisors is an integer number (228985764).

Almost surely, 2^850518539 is an apocalyptic number.

850518539 is a deficient number, since it is larger than the sum of its proper divisors (65424517).

850518539 is a wasteful number, since it uses less digits than its factorization.

850518539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65424516.

The product of its (nonzero) digits is 216000, while the sum is 44.

The square root of 850518539 is about 29163.6509888594. The cubic root of 850518539 is about 947.4608237249.

The spelling of 850518539 in words is "eight hundred fifty million, five hundred eighteen thousand, five hundred thirty-nine".