18054017 has 4 divisors (see below), whose sum is σ = 19116036. Its totient is φ = 16992000.

The previous prime is 18054007. The next prime is 18054019. The reversal of 18054017 is 71045081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14070001 + 3984016 = 3751^2 + 1996^2 .

It is a cyclic number.

It is not a de Polignac number, because 18054017 - 2¹² = 18049921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18054019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530984 + ... + 531017.

It is an arithmetic number, because the mean of its divisors is an integer number (4779009).

Almost surely, 2^18054017 is an apocalyptic number.

18054017 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18054017 is a deficient number, since it is larger than the sum of its proper divisors (1062019).

18054017 is a wasteful number, since it uses less digits than its factorization.

18054017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062018.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 18054017 is about 4249.0018827955. The cubic root of 18054017 is about 262.3360342623.

Adding to 18054017 its reverse (71045081), we get a palindrome (89099098).

The spelling of 18054017 in words is "eighteen million, fifty-four thousand, seventeen".