168910361538 has 8 divisors (see below), whose sum is σ = 337820723088. Its totient is φ = 56303453844.

The previous prime is 168910361533. The next prime is 168910361561. The reversal of 168910361538 is 835163019861.

It is a sphenic number, since it is the product of 3 distinct primes.

168910361538 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (168910361531) 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, 14075863456 + ... + 14075863467.

It is an arithmetic number, because the mean of its divisors is an integer number (42227590386).

Almost surely, 2^168910361538 is an apocalyptic number.

168910361538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

168910361538 is a wasteful number, since it uses less digits than its factorization.

168910361538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28151726928.

The product of its (nonzero) digits is 933120, while the sum is 51.

The spelling of 168910361538 in words is "one hundred sixty-eight billion, nine hundred ten million, three hundred sixty-one thousand, five hundred thirty-eight".