18884005 has 32 divisors (see below), whose sum is σ = 27705600. Its totient is φ = 12068352.

The previous prime is 18883999. The next prime is 18884029. The reversal of 18884005 is 50048881.

18884005 = 371² + 372² + ... + 475².

It is a cyclic number.

It is not a de Polignac number, because 18884005 - 2⁵ = 18883973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48351 + ... + 48739.

It is an arithmetic number, because the mean of its divisors is an integer number (865800).

Almost surely, 2^18884005 is an apocalyptic number.

It is an amenable number.

18884005 is a deficient number, since it is larger than the sum of its proper divisors (8821595).

18884005 is a wasteful number, since it uses less digits than its factorization.

18884005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493.

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 18884005 is about 4345.5730347102. The cubic root of 18884005 is about 266.2960363283.

The spelling of 18884005 in words is "eighteen million, eight hundred eighty-four thousand, five".