8563000381 has 16 divisors (see below), whose sum is σ = 9258070528. Its totient is φ = 7873200000.

The previous prime is 8563000331. The next prime is 8563000409. The reversal of 8563000381 is 1830003658.

It is a happy number.

8563000381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a 9-Lehmer number, since φ(8563000381) divides (8563000381-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 8563000381 - 2⁷ = 8563000253 is a prime.

It is a super-2 number, since 2×8563000381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8563000331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4753681 + ... + 4755481.

It is an arithmetic number, because the mean of its divisors is an integer number (578629408).

Almost surely, 2^8563000381 is an apocalyptic number.

It is an amenable number.

8563000381 is a deficient number, since it is larger than the sum of its proper divisors (695070147).

8563000381 is a wasteful number, since it uses less digits than its factorization.

8563000381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 8563000381 is about 92536.4813519511. The cubic root of 8563000381 is about 2045.8572200637.

The spelling of 8563000381 in words is "eight billion, five hundred sixty-three million, three hundred eighty-one", and thus it is an aban number.