381634446 has 32 divisors (see below), whose sum is σ = 797817600. Its totient is φ = 121472384.

The previous prime is 381634433. The next prime is 381634453. The reversal of 381634446 is 644436183.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92230 + ... + 96278.

It is an arithmetic number, because the mean of its divisors is an integer number (24931800).

Almost surely, 2^381634446 is an apocalyptic number.

381634446 is an abundant number, since it is smaller than the sum of its proper divisors (416183154).

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

381634446 is a wasteful number, since it uses less digits than its factorization.

381634446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4760.

The product of its digits is 165888, while the sum is 39.

The square root of 381634446 is about 19535.4663624906. The cubic root of 381634446 is about 725.3526281425.

The spelling of 381634446 in words is "three hundred eighty-one million, six hundred thirty-four thousand, four hundred forty-six".