2023209857 has 2 divisors, whose sum is σ = 2023209858. Its totient is φ = 2023209856.

The previous prime is 2023209841. The next prime is 2023209869. The reversal of 2023209857 is 7589023202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1852097296 + 171112561 = 43036^2 + 13081^2 .

It is a cyclic number.

It is not a de Polignac number, because 2023209857 - 2⁴ = 2023209841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2023209857.

It is not a weakly prime, because it can be changed into another prime (2023209827) 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, 1011604928 + 1011604929.

It is an arithmetic number, because the mean of its divisors is an integer number (1011604929).

Almost surely, 2^2023209857 is an apocalyptic number.

It is an amenable number.

2023209857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2023209857 is an equidigital number, since it uses as much as digits as its factorization.

2023209857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 2023209857 is about 44980.1051243769. The cubic root of 2023209857 is about 1264.7760818494.

The spelling of 2023209857 in words is "two billion, twenty-three million, two hundred nine thousand, eight hundred fifty-seven".