381568385 has 8 divisors (see below), whose sum is σ = 499507776. Its totient is φ = 277504240.

The previous prime is 381568381. The next prime is 381568403. The reversal of 381568385 is 583865183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 381568385 - 2² = 381568381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381568381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3468749 + ... + 3468858.

It is an arithmetic number, because the mean of its divisors is an integer number (62438472).

Almost surely, 2^381568385 is an apocalyptic number.

It is an amenable number.

381568385 is a deficient number, since it is larger than the sum of its proper divisors (117939391).

381568385 is a wasteful number, since it uses less digits than its factorization.

381568385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6937623.

The product of its digits is 691200, while the sum is 47.

The square root of 381568385 is about 19533.7754927203. The cubic root of 381568385 is about 725.3107728317.

The spelling of 381568385 in words is "three hundred eighty-one million, five hundred sixty-eight thousand, three hundred eighty-five".