381667912 has 16 divisors (see below), whose sum is σ = 726309360. Its totient is φ = 187985424.

The previous prime is 381667907. The next prime is 381667931. The reversal of 381667912 is 219766183.

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, 355498 + ... + 356569.

It is an arithmetic number, because the mean of its divisors is an integer number (45394335).

Almost surely, 2^381667912 is an apocalyptic number.

It is an amenable number.

381667912 is a deficient number, since it is larger than the sum of its proper divisors (344641448).

381667912 is a wasteful number, since it uses less digits than its factorization.

381667912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712140 (or 712136 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 381667912 is about 19536.3228884046. The cubic root of 381667912 is about 725.3738298814.

The spelling of 381667912 in words is "three hundred eighty-one million, six hundred sixty-seven thousand, nine hundred twelve".