2209117657 has 8 divisors (see below), whose sum is σ = 2226888000. Its totient is φ = 2191386864.

The previous prime is 2209117637. The next prime is 2209117663. The reversal of 2209117657 is 7567119022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2209117657 - 2³¹ = 61634009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2209117627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107844 + ... + 126682.

It is an arithmetic number, because the mean of its divisors is an integer number (278361000).

Almost surely, 2^2209117657 is an apocalyptic number.

It is an amenable number.

2209117657 is a deficient number, since it is larger than the sum of its proper divisors (17770343).

2209117657 is a wasteful number, since it uses less digits than its factorization.

2209117657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19775.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 2209117657 is about 47001.2516535464. The cubic root of 2209117657 is about 1302.3856896475.

The spelling of 2209117657 in words is "two billion, two hundred nine million, one hundred seventeen thousand, six hundred fifty-seven".