865168530 has 16 divisors (see below), whose sum is σ = 2076404544. Its totient is φ = 230711600.

The previous prime is 865168523. The next prime is 865168537. The reversal of 865168530 is 35861568.

It is an interprime number because it is at equal distance from previous prime (865168523) and next prime (865168537).

It is not an unprimeable number, because it can be changed into a prime (865168537) 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, 14419446 + ... + 14419505.

It is an arithmetic number, because the mean of its divisors is an integer number (129775284).

Almost surely, 2^865168530 is an apocalyptic number.

865168530 is an abundant number, since it is smaller than the sum of its proper divisors (1211236014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865168530 is a wasteful number, since it uses less digits than its factorization.

865168530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28838961.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 865168530 is about 29413.7472961199. The cubic root of 865168530 is about 952.8698187129.

The spelling of 865168530 in words is "eight hundred sixty-five million, one hundred sixty-eight thousand, five hundred thirty".