18135339 has 16 divisors (see below), whose sum is σ = 25331712. Its totient is φ = 11518848.

The previous prime is 18135301. The next prime is 18135347. The reversal of 18135339 is 93353181.

It is not a de Polignac number, because 18135339 - 2⁸ = 18135083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18135389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29574 + ... + 30180.

It is an arithmetic number, because the mean of its divisors is an integer number (1583232).

Almost surely, 2^18135339 is an apocalyptic number.

18135339 is a deficient number, since it is larger than the sum of its proper divisors (7196373).

18135339 is a wasteful number, since it uses less digits than its factorization.

18135339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066.

The product of its digits is 9720, while the sum is 33.

The square root of 18135339 is about 4258.5606723399. The cubic root of 18135339 is about 262.7293306548.

The spelling of 18135339 in words is "eighteen million, one hundred thirty-five thousand, three hundred thirty-nine".