381766384 has 20 divisors (see below), whose sum is σ = 756875416. Its totient is φ = 186443712.

The previous prime is 381766369. The next prime is 381766417. The reversal of 381766384 is 483667183.

It is a super-3 number, since 3×381766384³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276759 + ... + 278134.

Almost surely, 2^381766384 is an apocalyptic number.

It is an amenable number.

381766384 is a deficient number, since it is larger than the sum of its proper divisors (375109032).

381766384 is a wasteful number, since it uses less digits than its factorization.

381766384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554944 (or 554938 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 381766384 is about 19538.8429544843. The cubic root of 381766384 is about 725.4362077299.

The spelling of 381766384 in words is "three hundred eighty-one million, seven hundred sixty-six thousand, three hundred eighty-four".