168144380 has 24 divisors (see below), whose sum is σ = 360618048. Its totient is φ = 65826368.

The previous prime is 168144373. The next prime is 168144397. The reversal of 168144380 is 83441861.

It is a self number, because there is not a number n which added to its sum of digits gives 168144380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88499 + ... + 90378.

It is an arithmetic number, because the mean of its divisors is an integer number (15025752).

Almost surely, 2^168144380 is an apocalyptic number.

168144380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168144380 is an abundant number, since it is smaller than the sum of its proper divisors (192473668).

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

168144380 is a wasteful number, since it uses less digits than its factorization.

168144380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178933 (or 178931 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 168144380 is about 12967.0497801158. The cubic root of 168144380 is about 551.9428588545.

The spelling of 168144380 in words is "one hundred sixty-eight million, one hundred forty-four thousand, three hundred eighty".