2169994219 has 2 divisors, whose sum is σ = 2169994220. Its totient is φ = 2169994218.

The previous prime is 2169994213. The next prime is 2169994279. The reversal of 2169994219 is 9124999612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2169994219 is a prime.

It is a super-2 number, since 2×2169994219² = 9417749820986839922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2169994213) 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, 1084997109 + 1084997110.

It is an arithmetic number, because the mean of its divisors is an integer number (1084997110).

Almost surely, 2^2169994219 is an apocalyptic number.

2169994219 is a deficient number, since it is larger than the sum of its proper divisors (1).

2169994219 is an equidigital number, since it uses as much as digits as its factorization.

2169994219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 629856, while the sum is 52.

The square root of 2169994219 is about 46583.1967451784. The cubic root of 2169994219 is about 1294.6514407040.

The spelling of 2169994219 in words is "two billion, one hundred sixty-nine million, nine hundred ninety-four thousand, two hundred nineteen".