381676386 has 96 divisors (see below), whose sum is σ = 982497600. Its totient is φ = 97905024.

The previous prime is 381676381. The next prime is 381676387. The reversal of 381676386 is 683676183.

It is not an unprimeable number, because it can be changed into a prime (381676381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140065 + ... + 142763.

It is an arithmetic number, because the mean of its divisors is an integer number (10234350).

Almost surely, 2^381676386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381676386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491248800).

381676386 is an abundant number, since it is smaller than the sum of its proper divisors (600821214).

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

381676386 is a wasteful number, since it uses less digits than its factorization.

381676386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768 (or 2761 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 381676386 is about 19536.5397652706. The cubic root of 381676386 is about 725.3791982240.

The spelling of 381676386 in words is "three hundred eighty-one million, six hundred seventy-six thousand, three hundred eighty-six".