2266018 has 4 divisors (see below), whose sum is σ = 3399030. Its totient is φ = 1133008.

The previous prime is 2266003. The next prime is 2266021. The reversal of 2266018 is 8106622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8106622 = 2 ⋅4053311.

It can be written as a sum of positive squares in only one way, i.e., 1338649 + 927369 = 1157^2 + 963^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2265983 and 2266001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566503 + ... + 566506.

2^2266018 is an apocalyptic number.

2266018 is a deficient number, since it is larger than the sum of its proper divisors (1133012).

2266018 is a wasteful number, since it uses less digits than its factorization.

2266018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133011.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2266018 is about 1505.3298641826. The cubic root of 2266018 is about 131.3472905251.

The spelling of 2266018 in words is "two million, two hundred sixty-six thousand, eighteen".