18199150668 has 36 divisors (see below), whose sum is σ = 46194316168. Its totient is φ = 6041208960.

The previous prime is 18199150657. The next prime is 18199150681. The reversal of 18199150668 is 86605199181.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

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, 1040146 + ... + 1057497.

Almost surely, 2^18199150668 is an apocalyptic number.

18199150668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18199150668 is an abundant number, since it is smaller than the sum of its proper divisors (27995165500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18199150668 is a wasteful number, since it uses less digits than its factorization.

18199150668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097894 (or 2097889 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The spelling of 18199150668 in words is "eighteen billion, one hundred ninety-nine million, one hundred fifty thousand, six hundred sixty-eight".