168190188 has 24 divisors (see below), whose sum is σ = 393899520. Its totient is φ = 55855440.

The previous prime is 168190181. The next prime is 168190193. The reversal of 168190188 is 881091861.

168190188 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

168190188 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (168190181) 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 7 ways as a sum of consecutive naturals, for example, 22608 + ... + 29111.

It is an arithmetic number, because the mean of its divisors is an integer number (16412480).

Almost surely, 2^168190188 is an apocalyptic number.

It is an amenable number.

168190188 is an abundant number, since it is smaller than the sum of its proper divisors (225709332).

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

168190188 is a wasteful number, since it uses less digits than its factorization.

168190188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51997 (or 51995 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 42.

The square root of 168190188 is about 12968.8159829647. The cubic root of 168190188 is about 551.9929767012.

The spelling of 168190188 in words is "one hundred sixty-eight million, one hundred ninety thousand, one hundred eighty-eight".