190985618201 has 4 divisors (see below), whose sum is σ = 218269277952. Its totient is φ = 163701958452.

The previous prime is 190985618191. The next prime is 190985618207. The reversal of 190985618201 is 102816589091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 190985618201 - 2³⁰ = 189911876377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190985618201.

It is not an unprimeable number, because it can be changed into a prime (190985618207) 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, 13641829865 + ... + 13641829878.

It is an arithmetic number, because the mean of its divisors is an integer number (54567319488).

Almost surely, 2^190985618201 is an apocalyptic number.

It is an amenable number.

190985618201 is a deficient number, since it is larger than the sum of its proper divisors (27283659751).

190985618201 is an equidigital number, since it uses as much as digits as its factorization.

190985618201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27283659750.

The product of its (nonzero) digits is 311040, while the sum is 50.

The spelling of 190985618201 in words is "one hundred ninety billion, nine hundred eighty-five million, six hundred eighteen thousand, two hundred one".