201369789 has 6 divisors (see below), whose sum is σ = 290867486. Its totient is φ = 134246520.

The previous prime is 201369781. The next prime is 201369821. The reversal of 201369789 is 987963102.

201369789 is a `hidden beast` number, since 201 + 369 + 7 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 201356100 + 13689 = 14190^2 + 117^2 .

It is not a de Polignac number, because 201369789 - 2³ = 201369781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201369781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11187202 + ... + 11187219.

Almost surely, 2^201369789 is an apocalyptic number.

It is an amenable number.

201369789 is a deficient number, since it is larger than the sum of its proper divisors (89497697).

201369789 is a wasteful number, since it uses less digits than its factorization.

201369789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22374427 (or 22374424 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 201369789 is about 14190.4823385254. The cubic root of 201369789 is about 586.1356069661.

The spelling of 201369789 in words is "two hundred one million, three hundred sixty-nine thousand, seven hundred eighty-nine".