2116018 has 4 divisors (see below), whose sum is σ = 3174030. Its totient is φ = 1058008.

The previous prime is 2115983. The next prime is 2116019. The reversal of 2116018 is 8106112.

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., 1129969 + 986049 = 1063^2 + 993^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2115986 and 2116004.

It is not an unprimeable number, because it can be changed into a prime (2116019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 529003 + ... + 529006.

2^2116018 is an apocalyptic number.

2116018 is a deficient number, since it is larger than the sum of its proper divisors (1058012).

2116018 is a wasteful number, since it uses less digits than its factorization.

2116018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058011.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 2116018 is about 1454.6539107293. The cubic root of 2116018 is about 128.3826844919.

The spelling of 2116018 in words is "two million, one hundred sixteen thousand, eighteen".