18054002 has 8 divisors (see below), whose sum is σ = 27813036. Its totient is φ = 8782992.

The previous prime is 18053999. The next prime is 18054007. The reversal of 18054002 is 20045081.

It is a Cunningham number, because it is equal to 4249²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 18054001 + 1 = 4249^2 + 1^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18054007) 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, 121913 + ... + 122060.

Almost surely, 2^18054002 is an apocalyptic number.

18054002 is a deficient number, since it is larger than the sum of its proper divisors (9759034).

18054002 is a wasteful number, since it uses less digits than its factorization.

18054002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244012.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 18054002 is about 4249.0001176747. Note that the first 3 decimals coincide. The cubic root of 18054002 is about 262.3359616092.

Adding to 18054002 its reverse (20045081), we get a palindrome (38099083).

The spelling of 18054002 in words is "eighteen million, fifty-four thousand, two".