381686774 has 12 divisors (see below), whose sum is σ = 666004644. Its totient is φ = 163580004.

The previous prime is 381686759. The next prime is 381686803. The reversal of 381686774 is 477686183.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1947284 + ... + 1947479.

It is an arithmetic number, because the mean of its divisors is an integer number (55500387).

Almost surely, 2^381686774 is an apocalyptic number.

381686774 is a deficient number, since it is larger than the sum of its proper divisors (284317870).

381686774 is a wasteful number, since it uses less digits than its factorization.

381686774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3894779 (or 3894772 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The square root of 381686774 is about 19536.8056242570. The cubic root of 381686774 is about 725.3857789915.

The spelling of 381686774 in words is "three hundred eighty-one million, six hundred eighty-six thousand, seven hundred seventy-four".