201868535185 has 8 divisors (see below), whose sum is σ = 242292727656. Its totient is φ = 161461171200.

The previous prime is 201868535153. The next prime is 201868535191. The reversal of 201868535185 is 581535868102.

It can be written as a sum of positive squares in 4 ways, for example, as 23612317569 + 178256217616 = 153663^2 + 422204^2 .

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

It is not a de Polignac number, because 201868535185 - 2⁵ = 201868535153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4180714 + ... + 4228723.

It is an arithmetic number, because the mean of its divisors is an integer number (30286590957).

Almost surely, 2^201868535185 is an apocalyptic number.

It is an amenable number.

201868535185 is a deficient number, since it is larger than the sum of its proper divisors (40424192471).

201868535185 is an equidigital number, since it uses as much as digits as its factorization.

201868535185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8414243.

The product of its (nonzero) digits is 2304000, while the sum is 52.

The spelling of 201868535185 in words is "two hundred one billion, eight hundred sixty-eight million, five hundred thirty-five thousand, one hundred eighty-five".