381868 has 6 divisors (see below), whose sum is σ = 668276. Its totient is φ = 190932.

The previous prime is 381859. The next prime is 381911. The reversal of 381868 is 868183.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47730 + ... + 47737.

2³⁸¹⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

381868 is a deficient number, since it is larger than the sum of its proper divisors (286408).

381868 is a wasteful number, since it uses less digits than its factorization.

381868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95471 (or 95469 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 381868 is about 617.9546908957. The cubic root of 381868 is about 72.5500565925.

The spelling of 381868 in words is "three hundred eighty-one thousand, eight hundred sixty-eight".