2161292219 has 2 divisors, whose sum is σ = 2161292220. Its totient is φ = 2161292218.

The previous prime is 2161292213. The next prime is 2161292249. The reversal of 2161292219 is 9122921612.

2161292219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2161292219 is a prime.

It is a super-2 number, since 2×2161292219² = 9342368111819887922, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2161292213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080646109 + 1080646110.

It is an arithmetic number, because the mean of its divisors is an integer number (1080646110).

Almost surely, 2^2161292219 is an apocalyptic number.

2161292219 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161292219 is an equidigital number, since it uses as much as digits as its factorization.

2161292219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 35.

The square root of 2161292219 is about 46489.7001388480. The cubic root of 2161292219 is about 1292.9185405422.

The spelling of 2161292219 in words is "two billion, one hundred sixty-one million, two hundred ninety-two thousand, two hundred nineteen".