16218002 has 4 divisors (see below), whose sum is σ = 24327006. Its totient is φ = 8109000.

The previous prime is 16217987. The next prime is 16218019. The reversal of 16218002 is 20081261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20081261 = 61 ⋅329201.

It can be written as a sum of positive squares in only one way, i.e., 11978521 + 4239481 = 3461^2 + 2059^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4054499 + ... + 4054502.

Almost surely, 2^16218002 is an apocalyptic number.

16218002 is a deficient number, since it is larger than the sum of its proper divisors (8109004).

16218002 is an equidigital number, since it uses as much as digits as its factorization.

16218002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8109003.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 16218002 is about 4027.1580550060. The cubic root of 16218002 is about 253.1234900484.

Adding to 16218002 its reverse (20081261), we get a palindrome (36299263).

The spelling of 16218002 in words is "sixteen million, two hundred eighteen thousand, two".