168719980 has 144 divisors (see below), whose sum is σ = 435439872. Its totient is φ = 54489600.

The previous prime is 168719977. The next prime is 168719983. The reversal of 168719980 is 89917861.

168719980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (168719977) and next prime (168719983).

It is not an unprimeable number, because it can be changed into a prime (168719983) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 975174 + ... + 975346.

It is an arithmetic number, because the mean of its divisors is an integer number (3023888).

Almost surely, 2^168719980 is an apocalyptic number.

168719980 is a gapful number since it is divisible by the number (10) 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 168719980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217719936).

168719980 is an abundant number, since it is smaller than the sum of its proper divisors (266719892).

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

168719980 is a wasteful number, since it uses less digits than its factorization.

168719980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 49.

The square root of 168719980 is about 12989.2255350348. The cubic root of 168719980 is about 552.5719540748.

The spelling of 168719980 in words is "one hundred sixty-eight million, seven hundred nineteen thousand, nine hundred eighty".