18116768 has 12 divisors (see below), whose sum is σ = 35667450. Its totient is φ = 9058368.

The previous prime is 18116767. The next prime is 18116789. The reversal of 18116768 is 86761181.

It can be written as a sum of positive squares in only one way, i.e., 14227984 + 3888784 = 3772^2 + 1972^2 .

It is not an unprimeable number, because it can be changed into a prime (18116767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283043 + ... + 283106.

Almost surely, 2^18116768 is an apocalyptic number.

It is an amenable number.

18116768 is a deficient number, since it is larger than the sum of its proper divisors (17550682).

18116768 is an equidigital number, since it uses as much as digits as its factorization.

18116768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566159 (or 566151 counting only the distinct ones).

The product of its digits is 16128, while the sum is 38.

The square root of 18116768 is about 4256.3796823122. The cubic root of 18116768 is about 262.6396197539.

The spelling of 18116768 in words is "eighteen million, one hundred sixteen thousand, seven hundred sixty-eight".