18047017 has 8 divisors (see below), whose sum is σ = 19100160. Its totient is φ = 17004240.

The previous prime is 18046999. The next prime is 18047023. The reversal of 18047017 is 71074081.

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

It is not a de Polignac number, because 18047017 - 2¹¹ = 18044969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18047027) 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, 1143 + ... + 6115.

It is an arithmetic number, because the mean of its divisors is an integer number (2387520).

Almost surely, 2^18047017 is an apocalyptic number.

It is an amenable number.

18047017 is a deficient number, since it is larger than the sum of its proper divisors (1053143).

18047017 is a wasteful number, since it uses less digits than its factorization.

18047017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5183.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 18047017 is about 4248.1780800715. The cubic root of 18047017 is about 262.3021251028.

The spelling of 18047017 in words is "eighteen million, forty-seven thousand, seventeen".