381568005 has 48 divisors (see below), whose sum is σ = 814020480. Its totient is φ = 161011584.

The previous prime is 381568003. The next prime is 381568039. The reversal of 381568005 is 500865183.

It is not a de Polignac number, because 381568005 - 2¹ = 381568003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381568003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42495 + ... + 50684.

It is an arithmetic number, because the mean of its divisors is an integer number (16958760).

Almost surely, 2^381568005 is an apocalyptic number.

381568005 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

381568005 is an abundant number, since it is smaller than the sum of its proper divisors (432452475).

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

381568005 is a wasteful number, since it uses less digits than its factorization.

381568005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93210 (or 93207 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 381568005 is about 19533.7657659756. The cubic root of 381568005 is about 725.3105320551.

The spelling of 381568005 in words is "three hundred eighty-one million, five hundred sixty-eight thousand, five".