18168201 has 12 divisors (see below), whose sum is σ = 27089920. Its totient is φ = 11721240.

The previous prime is 18168187. The next prime is 18168203. The reversal of 18168201 is 10286181.

It is not a de Polignac number, because 18168201 - 2²³ = 9779593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18168203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32281 + ... + 32838.

Almost surely, 2^18168201 is an apocalyptic number.

It is an amenable number.

18168201 is a deficient number, since it is larger than the sum of its proper divisors (8921719).

18168201 is a wasteful number, since it uses less digits than its factorization.

18168201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65156 (or 65153 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 18168201 is about 4262.4172719245. The cubic root of 18168201 is about 262.8879271124.

The spelling of 18168201 in words is "eighteen million, one hundred sixty-eight thousand, two hundred one".