18104487 has 8 divisors (see below), whose sum is σ = 24167280. Its totient is φ = 12055680.

The previous prime is 18104483. The next prime is 18104533. The reversal of 18104487 is 78440181.

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

It is not a de Polignac number, because 18104487 - 2² = 18104483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18104483) 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, 37 + ... + 6017.

It is an arithmetic number, because the mean of its divisors is an integer number (3020910).

Almost surely, 2^18104487 is an apocalyptic number.

18104487 is a deficient number, since it is larger than the sum of its proper divisors (6062793).

18104487 is a wasteful number, since it uses less digits than its factorization.

18104487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6993.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 18104487 is about 4254.9367797889. The cubic root of 18104487 is about 262.5802602649.

The spelling of 18104487 in words is "eighteen million, one hundred four thousand, four hundred eighty-seven".