838018563 has 8 divisors (see below), whose sum is σ = 1138440528. Its totient is φ = 548137824.

The previous prime is 838018561. The next prime is 838018583. The reversal of 838018563 is 365810838.

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

It is not a de Polignac number, because 838018563 - 2¹ = 838018561 is a prime.

It is a super-2 number, since 2×838018563² = 1404550223865169938, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (838018561) 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, 2635120 + ... + 2635437.

It is an arithmetic number, because the mean of its divisors is an integer number (142305066).

Almost surely, 2^838018563 is an apocalyptic number.

838018563 is a deficient number, since it is larger than the sum of its proper divisors (300421965).

838018563 is a wasteful number, since it uses less digits than its factorization.

838018563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5270613.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 838018563 is about 28948.5502745820. The cubic root of 838018563 is about 942.7963220081.

The spelling of 838018563 in words is "eight hundred thirty-eight million, eighteen thousand, five hundred sixty-three".