168495337638 has 24 divisors (see below), whose sum is σ = 365084920200. Its totient is φ = 56163314304.

The previous prime is 168495337609. The next prime is 168495337639. The reversal of 168495337638 is 836733594861.

168495337638 is a `hidden beast` number, since 1 + 68 + 4 + 9 + 533 + 7 + 6 + 38 = 666.

168495337638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168495337639) 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 11 ways as a sum of consecutive naturals, for example, 505398 + ... + 769686.

It is an arithmetic number, because the mean of its divisors is an integer number (15211871675).

Almost surely, 2^168495337638 is an apocalyptic number.

168495337638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

168495337638 is an abundant number, since it is smaller than the sum of its proper divisors (196589582562).

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

168495337638 is a wasteful number, since it uses less digits than its factorization.

168495337638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299716 (or 299713 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 63.

The spelling of 168495337638 in words is "one hundred sixty-eight billion, four hundred ninety-five million, three hundred thirty-seven thousand, six hundred thirty-eight".