2120518867 has 2 divisors, whose sum is σ = 2120518868. Its totient is φ = 2120518866.

The previous prime is 2120518859. The next prime is 2120518901. The reversal of 2120518867 is 7688150212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120518867 - 2³ = 2120518859 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120518847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060259433 + 1060259434.

It is an arithmetic number, because the mean of its divisors is an integer number (1060259434).

Almost surely, 2^2120518867 is an apocalyptic number.

2120518867 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120518867 is an equidigital number, since it uses as much as digits as its factorization.

2120518867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 2120518867 is about 46049.0919237285. The cubic root of 2120518867 is about 1284.7364530902.

The spelling of 2120518867 in words is "two billion, one hundred twenty million, five hundred eighteen thousand, eight hundred sixty-seven".