1990000219 has 2 divisors, whose sum is σ = 1990000220. Its totient is φ = 1990000218.

The previous prime is 1990000147. The next prime is 1990000241. The reversal of 1990000219 is 9120000991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1990000219 - 2⁷ = 1990000091 is a prime.

It is a super-2 number, since 2×1990000219² = 7920201743240095922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1990000919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 995000109 + 995000110.

It is an arithmetic number, because the mean of its divisors is an integer number (995000110).

Almost surely, 2^1990000219 is an apocalyptic number.

1990000219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1990000219 is an equidigital number, since it uses as much as digits as its factorization.

1990000219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 1990000219 is about 44609.4185010296. The cubic root of 1990000219 is about 1257.8177180846.

The spelling of 1990000219 in words is "one billion, nine hundred ninety million, two hundred nineteen", and thus it is an aban number.