8205213019 has 2 divisors, whose sum is σ = 8205213020. Its totient is φ = 8205213018.

The previous prime is 8205212989. The next prime is 8205213053. The reversal of 8205213019 is 9103125028.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8205213019 - 2⁹ = 8205212507 is a prime.

It is a super-2 number, since 2×8205213019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8205213719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4102606509 + 4102606510.

It is an arithmetic number, because the mean of its divisors is an integer number (4102606510).

Almost surely, 2^8205213019 is an apocalyptic number.

8205213019 is a deficient number, since it is larger than the sum of its proper divisors (1).

8205213019 is an equidigital number, since it uses as much as digits as its factorization.

8205213019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 8205213019 is about 90582.6308902540. The cubic root of 8205213019 is about 2016.9569102035.

The spelling of 8205213019 in words is "eight billion, two hundred five million, two hundred thirteen thousand, nineteen".