2009517437 has 2 divisors, whose sum is σ = 2009517438. Its totient is φ = 2009517436.

The previous prime is 2009517401. The next prime is 2009517439. The reversal of 2009517437 is 7347159002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1906981561 + 102535876 = 43669^2 + 10126^2 .

It is a cyclic number.

It is not a de Polignac number, because 2009517437 - 2²⁸ = 1741081981 is a prime.

Together with 2009517439, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2009517437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2009517439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004758718 + 1004758719.

It is an arithmetic number, because the mean of its divisors is an integer number (1004758719).

Almost surely, 2^2009517437 is an apocalyptic number.

It is an amenable number.

2009517437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009517437 is an equidigital number, since it uses as much as digits as its factorization.

2009517437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 2009517437 is about 44827.6414391835. The cubic root of 2009517437 is about 1261.9164246281.

The spelling of 2009517437 in words is "two billion, nine million, five hundred seventeen thousand, four hundred thirty-seven".