381631650 has 24 divisors (see below), whose sum is σ = 946446864. Its totient is φ = 101768400.

The previous prime is 381631643. The next prime is 381631661. The reversal of 381631650 is 56136183.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1271956 + ... + 1272255.

It is an arithmetic number, because the mean of its divisors is an integer number (39435286).

Almost surely, 2^381631650 is an apocalyptic number.

381631650 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

381631650 is an abundant number, since it is smaller than the sum of its proper divisors (564815214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381631650 is a wasteful number, since it uses less digits than its factorization.

381631650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544226 (or 2544221 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 381631650 is about 19535.3948002082. The cubic root of 381631650 is about 725.3508567346.

The spelling of 381631650 in words is "three hundred eighty-one million, six hundred thirty-one thousand, six hundred fifty".