2019453109 has 2 divisors, whose sum is σ = 2019453110. Its totient is φ = 2019453108.

The previous prime is 2019453083. The next prime is 2019453131. The reversal of 2019453109 is 9013549102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1891989009 + 127464100 = 43497^2 + 11290^2 .

It is a cyclic number.

It is not a de Polignac number, because 2019453109 - 2¹⁵ = 2019420341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2019453179) 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, 1009726554 + 1009726555.

It is an arithmetic number, because the mean of its divisors is an integer number (1009726555).

Almost surely, 2^2019453109 is an apocalyptic number.

It is an amenable number.

2019453109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2019453109 is an equidigital number, since it uses as much as digits as its factorization.

2019453109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 2019453109 is about 44938.3256141125. The cubic root of 2019453109 is about 1263.9927739282.

The spelling of 2019453109 in words is "two billion, nineteen million, four hundred fifty-three thousand, one hundred nine".