209061133 has 4 divisors (see below), whose sum is σ = 212005728. Its totient is φ = 206116540.

The previous prime is 209061107. The next prime is 209061157. The reversal of 209061133 is 331160902.

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 a de Polignac number, because none of the positive numbers 2^k-209061133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 209061098 and 209061107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209061833) 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, 1472191 + ... + 1472332.

It is an arithmetic number, because the mean of its divisors is an integer number (53001432).

Almost surely, 2^209061133 is an apocalyptic number.

It is an amenable number.

209061133 is a deficient number, since it is larger than the sum of its proper divisors (2944595).

209061133 is an equidigital number, since it uses as much as digits as its factorization.

209061133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944594.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 209061133 is about 14458.9464692280. The cubic root of 209061133 is about 593.5050699760.

The spelling of 209061133 in words is "two hundred nine million, sixty-one thousand, one hundred thirty-three".