18100000168 has 16 divisors (see below), whose sum is σ = 33946210080. Its totient is φ = 9047677488.

The previous prime is 18100000159. The next prime is 18100000169. The reversal of 18100000168 is 86100000181.

It is a happy number.

It is a super-2 number, since 2×18100000168² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18100000169) 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, 256980 + ... + 319747.

It is an arithmetic number, because the mean of its divisors is an integer number (2121638130).

Almost surely, 2^18100000168 is an apocalyptic number.

It is an amenable number.

18100000168 is a deficient number, since it is larger than the sum of its proper divisors (15846209912).

18100000168 is a wasteful number, since it uses less digits than its factorization.

18100000168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580656 (or 580652 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 25.

The spelling of 18100000168 in words is "eighteen billion, one hundred million, one hundred sixty-eight", and thus it is an aban number.