18884885 has 8 divisors (see below), whose sum is σ = 22685856. Its totient is φ = 15091920.

The previous prime is 18884851. The next prime is 18884891. The reversal of 18884885 is 58848881.

It is a happy number.

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

It is not a de Polignac number, because 18884885 - 2⁸ = 18884629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6422 + ... + 8888.

It is an arithmetic number, because the mean of its divisors is an integer number (2835732).

Almost surely, 2^18884885 is an apocalyptic number.

It is an amenable number.

18884885 is a deficient number, since it is larger than the sum of its proper divisors (3800971).

18884885 is a wasteful number, since it uses less digits than its factorization.

18884885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003.

The product of its digits is 655360, while the sum is 50.

The square root of 18884885 is about 4345.6742859998. The cubic root of 18884885 is about 266.3001727543.

The spelling of 18884885 in words is "eighteen million, eight hundred eighty-four thousand, eight hundred eighty-five".