18268616 has 16 divisors (see below), whose sum is σ = 35089740. Its totient is φ = 8911360.

The previous prime is 18268609. The next prime is 18268619. The reversal of 18268616 is 61686281.

It can be written as a sum of positive squares in 2 ways, for example, as 18062500 + 206116 = 4250^2 + 454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18268616.

It is not an unprimeable number, because it can be changed into a prime (18268619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27521 + ... + 28176.

Almost surely, 2^18268616 is an apocalyptic number.

It is an amenable number.

18268616 is a deficient number, since it is larger than the sum of its proper divisors (16821124).

18268616 is a wasteful number, since it uses less digits than its factorization.

18268616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55744 (or 55740 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 18268616 is about 4274.1801553046. The cubic root of 18268616 is about 263.3713616322.

The spelling of 18268616 in words is "eighteen million, two hundred sixty-eight thousand, six hundred sixteen".