1868535385053 has 32 divisors (see below), whose sum is σ = 2593149672960. Its totient is φ = 1195356980160.

The previous prime is 1868535385051. The next prime is 1868535385069. The reversal of 1868535385053 is 3505835358681.

It is a happy number.

It is not a de Polignac number, because 1868535385053 - 2¹ = 1868535385051 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868535385051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9167218 + ... + 9368828.

It is an arithmetic number, because the mean of its divisors is an integer number (81035927280).

Almost surely, 2^{1868535385053} is an apocalyptic number.

It is an amenable number.

1868535385053 is a deficient number, since it is larger than the sum of its proper divisors (724614287907).

1868535385053 is a wasteful number, since it uses less digits than its factorization.

1868535385053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202297.

The product of its (nonzero) digits is 51840000, while the sum is 60.

The spelling of 1868535385053 in words is "one trillion, eight hundred sixty-eight billion, five hundred thirty-five million, three hundred eighty-five thousand, fifty-three".