381205850 has 12 divisors (see below), whose sum is σ = 709042974. Its totient is φ = 152482320.

The previous prime is 381205849. The next prime is 381205859. The reversal of 381205850 is 58502183.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 364008241 + 17197609 = 19079^2 + 4147^2 .

It is not an unprimeable number, because it can be changed into a prime (381205859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3812009 + ... + 3812108.

Almost surely, 2^381205850 is an apocalyptic number.

381205850 is a deficient number, since it is larger than the sum of its proper divisors (327837124).

381205850 is a wasteful number, since it uses less digits than its factorization.

381205850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7624129 (or 7624124 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 381205850 is about 19524.4935913841. The cubic root of 381205850 is about 725.0809897632.

The spelling of 381205850 in words is "three hundred eighty-one million, two hundred five thousand, eight hundred fifty".