381649850 has 24 divisors (see below), whose sum is σ = 719873568. Its totient is φ = 150508400.

The previous prime is 381649843. The next prime is 381649867. The reversal of 381649850 is 58946183.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50204 + ... + 57303.

It is an arithmetic number, because the mean of its divisors is an integer number (29994732).

Almost surely, 2^381649850 is an apocalyptic number.

381649850 is a deficient number, since it is larger than the sum of its proper divisors (338223718).

381649850 is a wasteful number, since it uses less digits than its factorization.

381649850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107590 (or 107585 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 381649850 is about 19535.8606158009. The cubic root of 381649850 is about 725.3623872036.

The spelling of 381649850 in words is "three hundred eighty-one million, six hundred forty-nine thousand, eight hundred fifty".