18312170539 has 8 divisors (see below), whose sum is σ = 19746724032. Its totient is φ = 16881320640.

The previous prime is 18312170453. The next prime is 18312170557. The reversal of 18312170539 is 93507121381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18312170539 - 2⁹ = 18312170027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18312170579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915619 + ... + 935404.

It is an arithmetic number, because the mean of its divisors is an integer number (2468340504).

Almost surely, 2^18312170539 is an apocalyptic number.

18312170539 is a deficient number, since it is larger than the sum of its proper divisors (1434553493).

18312170539 is a wasteful number, since it uses less digits than its factorization.

18312170539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851797.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 18312170539 in words is "eighteen billion, three hundred twelve million, one hundred seventy thousand, five hundred thirty-nine".