168441378 has 16 divisors (see below), whose sum is σ = 385008960. Its totient is φ = 48126096.

The previous prime is 168441349. The next prime is 168441379. The reversal of 168441378 is 873144861.

168441378 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 4010509 = 168441378 / (1 + 6 + 8 + 4 + 4 + 1 + 3 + 7 + 8).

It is not an unprimeable number, because it can be changed into a prime (168441379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2005213 + ... + 2005296.

It is an arithmetic number, because the mean of its divisors is an integer number (24063060).

Almost surely, 2^168441378 is an apocalyptic number.

168441378 is an abundant number, since it is smaller than the sum of its proper divisors (216567582).

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

168441378 is a wasteful number, since it uses less digits than its factorization.

168441378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010521.

The product of its digits is 129024, while the sum is 42.

The square root of 168441378 is about 12978.4967542470. The cubic root of 168441378 is about 552.2676382775.

The spelling of 168441378 in words is "one hundred sixty-eight million, four hundred forty-one thousand, three hundred seventy-eight".