168121368 has 96 divisors (see below), whose sum is σ = 468608400. Its totient is φ = 54432000.

The previous prime is 168121321. The next prime is 168121379. The reversal of 168121368 is 863121861.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 443403 + ... + 443781.

Almost surely, 2^168121368 is an apocalyptic number.

168121368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168121368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234304200).

168121368 is an abundant number, since it is smaller than the sum of its proper divisors (300487032).

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

168121368 is a wasteful number, since it uses less digits than its factorization.

168121368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 546 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 168121368 is about 12966.1624237860. The cubic root of 168121368 is about 551.9176783349.

The spelling of 168121368 in words is "one hundred sixty-eight million, one hundred twenty-one thousand, three hundred sixty-eight".