2068148909 has 2 divisors, whose sum is σ = 2068148910. Its totient is φ = 2068148908.

The previous prime is 2068148903. The next prime is 2068148921. The reversal of 2068148909 is 9098418602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1479940900 + 588208009 = 38470^2 + 24253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2068148909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2068148903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1034074454 + 1034074455.

It is an arithmetic number, because the mean of its divisors is an integer number (1034074455).

Almost surely, 2^2068148909 is an apocalyptic number.

It is an amenable number.

2068148909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2068148909 is an equidigital number, since it uses as much as digits as its factorization.

2068148909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 2068148909 is about 45476.9052267192. The cubic root of 2068148909 is about 1274.0718933771.

The spelling of 2068148909 in words is "two billion, sixty-eight million, one hundred forty-eight thousand, nine hundred nine".