2147018 has 4 divisors (see below), whose sum is σ = 3220530. Its totient is φ = 1073508.

The previous prime is 2147009. The next prime is 2147021. The reversal of 2147018 is 8107412.

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

It can be written as a sum of positive squares in only one way, i.e., 2007889 + 139129 = 1417^2 + 373^2 .

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2146984 and 2147002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536753 + ... + 536756.

2^2147018 is an apocalyptic number.

2147018 is a deficient number, since it is larger than the sum of its proper divisors (1073512).

2147018 is a wasteful number, since it uses less digits than its factorization.

2147018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073511.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 2147018 is about 1465.2706234686. The cubic root of 2147018 is about 129.0065898122.

The spelling of 2147018 in words is "two million, one hundred forty-seven thousand, eighteen".