381884394 has 8 divisors (see below), whose sum is σ = 763768800. Its totient is φ = 127294796.

The previous prime is 381884369. The next prime is 381884407. The reversal of 381884394 is 493488183.

It is a sphenic number, since it is the product of 3 distinct primes.

381884394 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31823694 + ... + 31823705.

It is an arithmetic number, because the mean of its divisors is an integer number (95471100).

Almost surely, 2^381884394 is an apocalyptic number.

381884394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

381884394 is a wasteful number, since it uses less digits than its factorization.

381884394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63647404.

The product of its digits is 663552, while the sum is 48.

The square root of 381884394 is about 19541.8626031400. The cubic root of 381884394 is about 725.5109479471.

The spelling of 381884394 in words is "three hundred eighty-one million, eight hundred eighty-four thousand, three hundred ninety-four".