2019450076409 has 2 divisors, whose sum is σ = 2019450076410. Its totient is φ = 2019450076408.

The previous prime is 2019450076331. The next prime is 2019450076429. The reversal of 2019450076409 is 9046700549102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2018095836409 + 1354240000 = 1420597^2 + 36800^2 .

It is a cyclic number.

It is not a de Polignac number, because 2019450076409 - 2²⁰ = 2019449027833 is a prime.

It is a super-2 number, since 2×2019450076409² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2019450076429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1009725038204 + 1009725038205.

It is an arithmetic number, because the mean of its divisors is an integer number (1009725038205).

Almost surely, 2^{2019450076409} is an apocalyptic number.

It is an amenable number.

2019450076409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2019450076409 is an equidigital number, since it uses as much as digits as its factorization.

2019450076409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 2019450076409 in words is "two trillion, nineteen billion, four hundred fifty million, seventy-six thousand, four hundred nine".