1000219999 has 2 divisors, whose sum is σ = 1000220000. Its totient is φ = 1000219998.

The previous prime is 1000219981. The next prime is 1000220029. The reversal of 1000219999 is 9999120001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000219999 - 2⁵ = 1000219967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000219399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500109999 + 500110000.

It is an arithmetic number, because the mean of its divisors is an integer number (500110000).

Almost surely, 2^1000219999 is an apocalyptic number.

1000219999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000219999 is an equidigital number, since it uses as much as digits as its factorization.

1000219999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 40.

The square root of 1000219999 is about 31626.2549000036. The cubic root of 1000219999 is about 1000.0733276229.

The spelling of 1000219999 in words is "one billion, two hundred nineteen thousand, nine hundred ninety-nine".