18052539 has 8 divisors (see below), whose sum is σ = 25116672. Its totient is φ = 11511720.

The previous prime is 18052513. The next prime is 18052553. The reversal of 18052539 is 93525081.

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

It is not a de Polignac number, because 18052539 - 2¹⁷ = 17921467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18052579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130747 + ... + 130884.

It is an arithmetic number, because the mean of its divisors is an integer number (3139584).

Almost surely, 2^18052539 is an apocalyptic number.

18052539 is a deficient number, since it is larger than the sum of its proper divisors (7064133).

18052539 is a wasteful number, since it uses less digits than its factorization.

18052539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261657.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 18052539 is about 4248.8279560368. The cubic root of 18052539 is about 262.3288753155.

The spelling of 18052539 in words is "eighteen million, fifty-two thousand, five hundred thirty-nine".