18016002 has 12 divisors (see below), whose sum is σ = 39034710. Its totient is φ = 6005328.

The previous prime is 18016001. The next prime is 18016007. The reversal of 18016002 is 20061081.

It can be written as a sum of positive squares in only one way, i.e., 15610401 + 2405601 = 3951^2 + 1551^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1000889 = 18016002 / (1 + 8 + 0 + 1 + 6 + 0 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (18016001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 500427 + ... + 500462.

Almost surely, 2^18016002 is an apocalyptic number.

18016002 is an abundant number, since it is smaller than the sum of its proper divisors (21018708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18016002 is a wasteful number, since it uses less digits than its factorization.

18016002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000897 (or 1000894 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 18016002 is about 4244.5261219599. The cubic root of 18016002 is about 262.1517777219.

Adding to 18016002 its reverse (20061081), we get a palindrome (38077083).

The spelling of 18016002 in words is "eighteen million, sixteen thousand, two".