18968159166 has 48 divisors (see below), whose sum is σ = 43136528400. Its totient is φ = 5549716480.

The previous prime is 18968159149. The next prime is 18968159167. The reversal of 18968159166 is 66195186981.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18968159167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 429411 + ... + 471518.

It is an arithmetic number, because the mean of its divisors is an integer number (898677675).

Almost surely, 2^18968159166 is an apocalyptic number.

18968159166 is an abundant number, since it is smaller than the sum of its proper divisors (24168369234).

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

18968159166 is a wasteful number, since it uses less digits than its factorization.

18968159166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900985 (or 900974 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 60.

The spelling of 18968159166 in words is "eighteen billion, nine hundred sixty-eight million, one hundred fifty-nine thousand, one hundred sixty-six".