1868535168 has 64 divisors (see below), whose sum is σ = 5123435520. Its totient is φ = 602749440.

The previous prime is 1868535167. The next prime is 1868535169. The reversal of 1868535168 is 8615358681.

It is an interprime number because it is at equal distance from previous prime (1868535167) and next prime (1868535169).

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1868535168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868535167) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 66580 + ... + 90387.

It is an arithmetic number, because the mean of its divisors is an integer number (80053680).

Almost surely, 2^1868535168 is an apocalyptic number.

It is an amenable number.

1868535168 is an abundant number, since it is smaller than the sum of its proper divisors (3254900352).

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

1868535168 is a wasteful number, since it uses less digits than its factorization.

1868535168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157015 (or 157003 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 51.

The square root of 1868535168 is about 43226.5562819894. The cubic root of 1868535168 is about 1231.6871921869.

The spelling of 1868535168 in words is "one billion, eight hundred sixty-eight million, five hundred thirty-five thousand, one hundred sixty-eight".