168105378 has 48 divisors (see below), whose sum is σ = 395871840. Its totient is φ = 47451432.

The previous prime is 168105271. The next prime is 168105383. The reversal of 168105378 is 873501861.

It is a super-2 number, since 2×168105378² = 56518836225045768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2025325 + ... + 2025407.

It is an arithmetic number, because the mean of its divisors is an integer number (8247330).

Almost surely, 2^168105378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168105378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197935920).

168105378 is an abundant number, since it is smaller than the sum of its proper divisors (227766462).

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

168105378 is an frugal number, since it uses more digits than its factorization.

168105378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 168105378 is about 12965.5458041688. The cubic root of 168105378 is about 551.9001801755.

The spelling of 168105378 in words is "one hundred sixty-eight million, one hundred five thousand, three hundred seventy-eight".