168081880 has 16 divisors (see below), whose sum is σ = 378184320. Its totient is φ = 67232736.

The previous prime is 168081869. The next prime is 168081887. The reversal of 168081880 is 88180861.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 4202047 = 168081880 / (1 + 6 + 8 + 0 + 8 + 1 + 8 + 8 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168081887) 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, 2100984 + ... + 2101063.

It is an arithmetic number, because the mean of its divisors is an integer number (23636520).

Almost surely, 2^168081880 is an apocalyptic number.

168081880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168081880 is an abundant number, since it is smaller than the sum of its proper divisors (210102440).

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

168081880 is a wasteful number, since it uses less digits than its factorization.

168081880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202058 (or 4202054 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 40.

The square root of 168081880 is about 12964.6396016241. The cubic root of 168081880 is about 551.8744638562.

The spelling of 168081880 in words is "one hundred sixty-eight million, eighty-one thousand, eight hundred eighty".