201126609 has 48 divisors (see below), whose sum is σ = 331531200. Its totient is φ = 116702208.

The previous prime is 201126557. The next prime is 201126613. The reversal of 201126609 is 906621102.

201126609 is a `hidden beast` number, since 20 + 11 + 26 + 609 = 666.

It is not a de Polignac number, because 201126609 - 2⁸ = 201126353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201126619) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 124197 + ... + 125805.

It is an arithmetic number, because the mean of its divisors is an integer number (6906900).

Almost surely, 2^201126609 is an apocalyptic number.

It is an amenable number.

201126609 is a deficient number, since it is larger than the sum of its proper divisors (130404591).

201126609 is a wasteful number, since it uses less digits than its factorization.

201126609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694 (or 1691 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 201126609 is about 14181.9113309878. The cubic root of 201126609 is about 585.8995671358.

The spelling of 201126609 in words is "two hundred one million, one hundred twenty-six thousand, six hundred nine".