18168799 has 8 divisors (see below), whose sum is σ = 19860048. Its totient is φ = 16484160.

The previous prime is 18168793. The next prime is 18168811. The reversal of 18168799 is 99786181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18168799 - 2³ = 18168791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18168791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5449 + ... + 8125.

It is an arithmetic number, because the mean of its divisors is an integer number (2482506).

Almost surely, 2^18168799 is an apocalyptic number.

18168799 is a deficient number, since it is larger than the sum of its proper divisors (1691249).

18168799 is a wasteful number, since it uses less digits than its factorization.

18168799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305.

The product of its digits is 217728, while the sum is 49.

The square root of 18168799 is about 4262.4874193363. The cubic root of 18168799 is about 262.8908113689.

The spelling of 18168799 in words is "eighteen million, one hundred sixty-eight thousand, seven hundred ninety-nine".