2160981919 has 2 divisors, whose sum is σ = 2160981920. Its totient is φ = 2160981918.

The previous prime is 2160981869. The next prime is 2160981937. The reversal of 2160981919 is 9191890612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2160981919 - 2³¹ = 13498271 is a prime.

It is a super-2 number, since 2×2160981919² = 9339685708489845122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2160981959) 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, 1080490959 + 1080490960.

It is an arithmetic number, because the mean of its divisors is an integer number (1080490960).

Almost surely, 2^2160981919 is an apocalyptic number.

2160981919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2160981919 is an equidigital number, since it uses as much as digits as its factorization.

2160981919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 46.

The square root of 2160981919 is about 46486.3627206948. The cubic root of 2160981919 is about 1292.8566621559.

The spelling of 2160981919 in words is "two billion, one hundred sixty million, nine hundred eighty-one thousand, nine hundred nineteen".