381969850 has 12 divisors (see below), whose sum is σ = 710464014. Its totient is φ = 152787920.

The previous prime is 381969839. The next prime is 381969851. The reversal of 381969850 is 58969183.

It can be written as a sum of positive squares in 3 ways, for example, as 187060329 + 194909521 = 13677^2 + 13961^2 .

It is a junction number, because it is equal to n+sod(n) for n = 381969794 and 381969803.

It is not an unprimeable number, because it can be changed into a prime (381969851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3819649 + ... + 3819748.

Almost surely, 2^381969850 is an apocalyptic number.

381969850 is a deficient number, since it is larger than the sum of its proper divisors (328494164).

381969850 is a wasteful number, since it uses less digits than its factorization.

381969850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7639409 (or 7639404 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 381969850 is about 19544.0489663734. The cubic root of 381969850 is about 725.5650608676.

The spelling of 381969850 in words is "three hundred eighty-one million, nine hundred sixty-nine thousand, eight hundred fifty".