381929168 has 40 divisors (see below), whose sum is σ = 774057600. Its totient is φ = 182213504.

The previous prime is 381929161. The next prime is 381929209. The reversal of 381929168 is 861929183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381929161) 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, 186293 + ... + 188331.

It is an arithmetic number, because the mean of its divisors is an integer number (19351440).

Almost surely, 2^381929168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381929168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387028800).

381929168 is an abundant number, since it is smaller than the sum of its proper divisors (392128432).

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

381929168 is a wasteful number, since it uses less digits than its factorization.

381929168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579 (or 2573 counting only the distinct ones).

The product of its digits is 186624, while the sum is 47.

The square root of 381929168 is about 19543.0081614883. The cubic root of 381929168 is about 725.5393009935.

The spelling of 381929168 in words is "three hundred eighty-one million, nine hundred twenty-nine thousand, one hundred sixty-eight".