5657972909 has 2 divisors, whose sum is σ = 5657972910. Its totient is φ = 5657972908.

The previous prime is 5657972891. The next prime is 5657972911. The reversal of 5657972909 is 9092797565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4581936100 + 1076036809 = 67690^2 + 32803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5657972909 is a prime.

Together with 5657972911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5657972609) 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 as a sum of consecutive naturals, namely, 2828986454 + 2828986455.

It is an arithmetic number, because the mean of its divisors is an integer number (2828986455).

Almost surely, 2^5657972909 is an apocalyptic number.

It is an amenable number.

5657972909 is a deficient number, since it is larger than the sum of its proper divisors (1).

5657972909 is an equidigital number, since it uses as much as digits as its factorization.

5657972909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10716300, while the sum is 59.

The square root of 5657972909 is about 75219.4981969436. The cubic root of 5657972909 is about 1781.9148804278.

The spelling of 5657972909 in words is "five billion, six hundred fifty-seven million, nine hundred seventy-two thousand, nine hundred nine".