18984039 has 8 divisors (see below), whose sum is σ = 26412672. Its totient is φ = 12105720.

The previous prime is 18984029. The next prime is 18984073. The reversal of 18984039 is 93048981.

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

It is not a de Polignac number, because 18984039 - 2¹⁵ = 18951271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18984029) 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, 137497 + ... + 137634.

It is an arithmetic number, because the mean of its divisors is an integer number (3301584).

Almost surely, 2^18984039 is an apocalyptic number.

18984039 is a deficient number, since it is larger than the sum of its proper divisors (7428633).

18984039 is a wasteful number, since it uses less digits than its factorization.

18984039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275157.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 18984039 is about 4357.0677066119. The cubic root of 18984039 is about 266.7654240120.

The spelling of 18984039 in words is "eighteen million, nine hundred eighty-four thousand, thirty-nine".