864163810 has 8 divisors (see below), whose sum is σ = 1555494876. Its totient is φ = 345665520.

The previous prime is 864163799. The next prime is 864163813. The reversal of 864163810 is 18361468.

It can be written as a sum of positive squares in 2 ways, for example, as 863830881 + 332929 = 29391^2 + 577^2 .

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

It is a super-2 number, since 2×864163810² = 1493558181027432200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 864163810.

It is not an unprimeable number, because it can be changed into a prime (864163813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43208181 + ... + 43208200.

Almost surely, 2^864163810 is an apocalyptic number.

864163810 is a deficient number, since it is larger than the sum of its proper divisors (691331066).

864163810 is a wasteful number, since it uses less digits than its factorization.

864163810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86416388.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 864163810 is about 29396.6632460216. The cubic root of 864163810 is about 952.5008200083.

The spelling of 864163810 in words is "eight hundred sixty-four million, one hundred sixty-three thousand, eight hundred ten".