201195889 has 4 divisors (see below), whose sum is σ = 201378420. Its totient is φ = 201013360.

The previous prime is 201195853. The next prime is 201195913. The reversal of 201195889 is 988591102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988591102 = 2 ⋅494295551.

It can be written as a sum of positive squares in 2 ways, for example, as 21233664 + 179962225 = 4608^2 + 13415^2 .

It is a cyclic number.

It is not a de Polignac number, because 201195889 - 2¹¹ = 201193841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201195829) 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, 89602 + ... + 91819.

It is an arithmetic number, because the mean of its divisors is an integer number (50344605).

Almost surely, 2^201195889 is an apocalyptic number.

It is an amenable number.

201195889 is a deficient number, since it is larger than the sum of its proper divisors (182531).

201195889 is a wasteful number, since it uses less digits than its factorization.

201195889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182530.

The product of its (nonzero) digits is 51840, while the sum is 43.

The square root of 201195889 is about 14184.3536687436. The cubic root of 201195889 is about 585.9668323316.

The spelling of 201195889 in words is "two hundred one million, one hundred ninety-five thousand, eight hundred eighty-nine".