18885039 has 8 divisors (see below), whose sum is σ = 25364400. Its totient is φ = 12497856.

The previous prime is 18885019. The next prime is 18885043. The reversal of 18885039 is 93058881.

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

It is not a de Polignac number, because 18885039 - 2¹¹ = 18882991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18885019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22564 + ... + 23385.

It is an arithmetic number, because the mean of its divisors is an integer number (3170550).

Almost surely, 2^18885039 is an apocalyptic number.

18885039 is a deficient number, since it is larger than the sum of its proper divisors (6479361).

18885039 is a wasteful number, since it uses less digits than its factorization.

18885039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46089.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 18885039 is about 4345.6920047330. The cubic root of 18885039 is about 266.3008966157.

The spelling of 18885039 in words is "eighteen million, eight hundred eighty-five thousand, thirty-nine".