381871832 has 16 divisors (see below), whose sum is σ = 717276600. Its totient is φ = 190598080.

The previous prime is 381871811. The next prime is 381871843. The reversal of 381871832 is 238178183.

It is a self number, because there is not a number n which added to its sum of digits gives 381871832.

It is a congruent 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, 37394 + ... + 46497.

Almost surely, 2^381871832 is an apocalyptic number.

It is an amenable number.

381871832 is a deficient number, since it is larger than the sum of its proper divisors (335404768).

381871832 is a wasteful number, since it uses less digits than its factorization.

381871832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84466 (or 84462 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 381871832 is about 19541.5411879411. The cubic root of 381871832 is about 725.5029926875.

The spelling of 381871832 in words is "three hundred eighty-one million, eight hundred seventy-one thousand, eight hundred thirty-two".