2161404059 has 2 divisors, whose sum is σ = 2161404060. Its totient is φ = 2161404058.

The previous prime is 2161404043. The next prime is 2161404067. The reversal of 2161404059 is 9504041612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2161404059 - 2⁴ = 2161404043 is a prime.

It is a super-3 number, since 3×2161404059³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2161404019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080702029 + 1080702030.

It is an arithmetic number, because the mean of its divisors is an integer number (1080702030).

Almost surely, 2^2161404059 is an apocalyptic number.

2161404059 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161404059 is an equidigital number, since it uses as much as digits as its factorization.

2161404059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 2161404059 is about 46490.9029703661. The cubic root of 2161404059 is about 1292.9408416320.

The spelling of 2161404059 in words is "two billion, one hundred sixty-one million, four hundred four thousand, fifty-nine".