18168064 has 18 divisors (see below), whose sum is σ = 36265670. Its totient is φ = 9083904.

The previous prime is 18168061. The next prime is 18168071. The reversal of 18168064 is 46086181.

It can be written as a sum of positive squares in only one way, i.e., 11614464 + 6553600 = 3408^2 + 2560^2 .

It is not an unprimeable number, because it can be changed into a prime (18168061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35229 + ... + 35740.

Almost surely, 2^18168064 is an apocalyptic number.

It is an amenable number.

18168064 is a deficient number, since it is larger than the sum of its proper divisors (18097606).

18168064 is an frugal number, since it uses more digits than its factorization.

18168064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70985 (or 70971 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 18168064 is about 4262.4012012010. The cubic root of 18168064 is about 262.8872663290.

The spelling of 18168064 in words is "eighteen million, one hundred sixty-eight thousand, sixty-four".