18348539 has 8 divisors (see below), whose sum is σ = 20088432. Its totient is φ = 16620640.

The previous prime is 18348521. The next prime is 18348541. The reversal of 18348539 is 93584381.

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 18348539 - 2²⁰ = 17299963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18348496 and 18348505.

It is not an unprimeable number, because it can be changed into a prime (18348599) 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, 377 + ... + 6069.

It is an arithmetic number, because the mean of its divisors is an integer number (2511054).

Almost surely, 2^18348539 is an apocalyptic number.

18348539 is a deficient number, since it is larger than the sum of its proper divisors (1739893).

18348539 is a wasteful number, since it uses less digits than its factorization.

18348539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5997.

The product of its digits is 103680, while the sum is 41.

The square root of 18348539 is about 4283.5194641790. The cubic root of 18348539 is about 263.7548755865.

The spelling of 18348539 in words is "eighteen million, three hundred forty-eight thousand, five hundred thirty-nine".