863538164 has 12 divisors (see below), whose sum is σ = 1528172100. Its totient is φ = 426917568.

The previous prime is 863538157. The next prime is 863538199. The reversal of 863538164 is 461835368.

It can be written as a sum of positive squares in 2 ways, for example, as 107288164 + 756250000 = 10358^2 + 27500^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1212479 + ... + 1213190.

It is an arithmetic number, because the mean of its divisors is an integer number (127347675).

Almost surely, 2^863538164 is an apocalyptic number.

It is an amenable number.

863538164 is a deficient number, since it is larger than the sum of its proper divisors (664633936).

863538164 is a wasteful number, since it uses less digits than its factorization.

863538164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425762 (or 2425760 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The square root of 863538164 is about 29386.0198734024. The cubic root of 863538164 is about 952.2708974734.

The spelling of 863538164 in words is "eight hundred sixty-three million, five hundred thirty-eight thousand, one hundred sixty-four".